Math Methods for Preservice Elementary Teachers
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Contents
 1 Introduction
 1.1 Special Introduction for Preservice Teachers
 1.2 The Challenge to You and Your Students
 1.3 A Tidbit of Math Education History
 1.4 Mathematics Is a Discipline of Study
 1.5 Improving Math Education
 1.6 Math Content Pedagogical Knowledge
 1.7 Math Manipulatives
 1.8 Communicating in the Language of Mathematics
 1.9 Good Math Lesson Plans
 1.10 Problembased and Projectbased Learning
 2 Prerequisites: A Delicate and Challenging Issue
 3 Learning Theories in Math Education
 4 A Teacher's Collection of Professional Resources
 5 Supportive Professional Organizations
 6 Sustainability as a Math Education Topic
 7 Author
 “To understand mathematics means to be able to do mathematics. And what does it mean doing mathematics? In the first place it means to be able to solve mathematical problems. For the higher aims about which I am now talking are some general tactics of problems—to have the right attitude for problems and to be able to attack all kinds of problems, not only very simple problems, which can be solved with the skills of the primary school, but more complicated problems of engineering, physics and so on, which will be further developed in the high school. But the foundations should be started in the primary school. And so I think an essential point in the primary school is to introduce the children to the tactics of problem solving. Not to solve this or that kind of problem, not to make just long divisions or some such thing, but to develop a general attitude for the solution of problems.” (George Polya, a leading mathematician and math educator of the 20th century.)
Introduction
The main audience for this document is faculty who teach a Math Methods course for preservice elementary education teachers. I believe that most faculty who teach the Mathematics for Elementary Teachers course (often taught in math departments) will also benefit from this document.
I have a third audience in mind. Please consider sharing this document with students taking a Math Methods course or a Math for Elementary Teachers course. I realize that this may seem like a strange request. It will make more sense to you after you read the following special introduction just for preservice elementary school teachers.
Special Introduction for Preservice Teachers
 I assume that you are interested in becoming an elementary school teacher. In most elementary schools, each teacher is responsible for a wide part of the curriculum, including math. Thus, in your elementary education program of study you are probably required to gain some knowledge and skills in both math content (for example, through a course in Mathematics for Elementary Teachers) and math teaching methods (for example, in a course called Math Methods). In many teacher education programs, the math content course is taught by Mathematics Department faculty and the math teaching methods course is taught by College of Education faculty. In some cases these courses are team taught and/or both the Math Department and the College of Education share in teaching the two courses.
 At this stage of your college education and elementary education program of study, you have many years of experience in being a student in courses where someone (a teacher, faculty member, detailed syllabus, or "standards") says what you are to learn and how you are to demonstrate what you have learned.
 Eventually, you will become a professional in a long and honored profession. As a professional you will be engaged in a lifelong process of learning on the job, maintaining and increasing your professional competence. In this process you will make decisions for yourself about what you need/want to learn, how you will go about gaining relevant knowledge and skills, and how you will use your new knowledge and skills.
 Ask yourself the following question, "To what extent am I already an independent, selfsufficient, intrinsically motivated learner who is responsible for my own education?" A related question is, "To what extent do I want my future students to become independent, selfsufficient, intrinsically motivated learners?"
 My belief is that our current educational system is weak in preparing students to become lifelong learners. Young students are especially inquisitive and curious. Every teacher has an opportunity to help their students develop habits of mind that will last a lifetime. Cultivate these habits of mind in yourself, and learn to cultivate them in your students. In the future, you will thank yourself for doing so, and your students will thank you.
Thank you for reading the subsection given above. We now continue with the general introduction to this document.
If you skipped over the quote from George Polya given above, please read it. Learning and teaching problem solving has been (and continues to be) a unifying theme in my professional career. I have written and presented extensively about problem solving—not only in math, but across the curriculum.
My doctorate is in mathematics. My teaching and writing experience is in a combination of math education and computers in education. This document summarizes some of my insights into learning and teaching problem solving from a math and computer science point of view.
This document has three main goals:
 To share some of the insights that researchers and experienced teachers of teachers have gained through designing and teaching the Math Methods course for preservice elementary teachers.
 To present some Information and Communication Technology (ICT) ideas that are important to teaching and learning math at the elementary school level.
 To help improve math education.
As you teach math methods, remember that some of your students will eventually become teachers of teachers. All will do this informally in their conversations with fellow teachers. Some will eventually become workshop leaders, make conference presentations, and/or teach a Math Methods course. So, teach your students in a manner that role models behaviors you want them to use with their future students and fellow teachers.
The Challenge to You and Your Students
In my opinion, the preservice elementary education Math Methods course is near the top of the list of the most important and most challenging education courses to teach. In some sense, our whole math education system rests in the hands of the few thousand faculty members who regularly teach this Math Methods course.
Preservice elementary school teachers enter a Math Methods course with widely varying math backgrounds and interest in math. Many profess to hate math and claim, "I can't do math." Some have taken the minimum math requirements to graduate from high school, and the minimum math content courses in college to meet requirements for entry into a teacher education program.
On the other hand, many students in a Math Methods course are relatively strong in math and have a good self image of their ability to learn and use math. They may have taken a strong math program in high school, and they may have taken a yearlong college sequence in discrete mathematics or calculus, and perhaps still more, in college.
The students in the Math Methods course have typically completed some version of Mathematics for Elementary Teachers coursework from a math department. The math prerequisite and the number of credits in this course or course sequence varies in different programs of study throughout the country. A relatively strong course might have college algebra or equivalent as a prerequisite and be a year sequence, three or four credits per term.
Nowadays, many teacher education programs of study require their students to demonstrate some Information and Communication Technology (ICT) knowledge and skills, and/or take an ICT course. This course might be mainly ICT content or a mixture of ICT content and ICT methods. ICT methods are now important to all teachers, since ICT has become a routine component of the informal and formal education of most students.
The disciplines of Computer Science and Mathematics are closely linked. This suggests that math teachers at every grade level may (could, should, likely will) have some responsibilities to help their students learn some math related ICT and Computer Science.
In brief summary, the math content, math interests, ICT content, and ICT interests of students in a Math Methods course vary tremendously across the nation.
The teachers of Math Methods courses sometimes complain about the modest math and ICT content knowledge of their students. They want to spend the valuable and limited course time teaching Math Methods, not math and computer content.
This ongoing problem creates tension between teachers of Math Methods courses and teachers of math and computing content courses. In some cases, there is close cooperation among the departments and faculty who teach the content and methods courses. The same faculty members may teach both courses, or team teaching may occur. This can be especially effective in a collaboration between faculty who teach Math for Elementary Teachers and Math Methods. Both courses need to stress math content, math pedagogy, and math pedagogical content knowledge.
A Tidbit of Math Education History
Mathematics as a formal area of teaching and learning was developed about 5,000 years ago by the Sumerians. They did this at the same time as they developed reading and writing. However, the roots of mathematics go back much more than 5,000 years.
Throughout their history, humans have faced the need to measure and communicate about time, quantity, and distance. The Ishango Bone is a bone tool handle approximately 20,000 years old.
The picture given below shows Sumerian clay tokens whose use began about 11,000 years ago (see http://www.sumerian.org/tokens.htm). Such clay tokens were a predecessor to reading, writing, and mathematics.
The development of reading, writing, and formal mathematics 5,000 years ago allowed the codification of math knowledge, the development of formal instruction in mathematics, and also began a steady accumulation of mathematical knowledge.
Mathematics Is a Discipline of Study
A discipline (an organized, formal field of study) such as mathematics tends to be defined by the types of problems it addresses, the methods it uses to address these problems, and the results it has achieved. Problem solving is a unifying concept in every discipline of study.
Here are several ideas to keep in mind as you teach and learn math:
 Mathematics as a human endeavor. For example, consider the math of measurement of time such as years, seasons, months, weeks, days, and so on. Or, consider the measurement of distance, and the different systems of distance measurement that developed throughout the world. Or, think about math in art, dance, and music. There is a rich history of human development of mathematics and mathematical uses in our modern society.
 Mathematics as a vibrant discipline that has considerable breadth and depth, and a long history. Nowadays, a Ph.D. research dissertation in mathematics is typically focused on definitions, theorems, and proofs related to a single problem in a narrow subfield in mathematics.
 Mathematics as an interdisciplinary language and tool. Like reading and writing, math is an important component of learning and "doing" (using one's knowledge) in each academic discipline. Mathematics is such a useful language and tool that it is considered one of the "basics" in our formal educational system.
 Definitions and proofs are core (foundational) to mathematics. Mathematicians often talk about the beauty of a particular proof or mathematical result.
Consider the task of developing a K8 or K12 mathematics curriculum. How much emphasis should be given to each of the items 14 above, and what specific content should be taught?
An educational system that overemphasizes the past tends to be out of tune with younger people. An educational system that overemphasizes the future tends to be out of tune with older people. Thus, our educational system faces a continuing challenge of seeking an appropriate balance between the past and the future.
The challenge becomes greater in times of rapid change. Today we live at a time of rapidly increasing technologicallybased change. The world is growing "smaller." The world as a whole faces the challenge of sustainability, climate change, increasing population, diseases that spread rapidly, large numbers of hungry people living in poverty, and so on. Ask yourself: "In what ways does knowledge and skill in math affect a person's understanding of such problems and help in dealing with such problems?"
Here are a few rapidly changing areas to think about:
 Information and Communication Technology (ICT), including computers, robots, artificial intelligence, telecommunications, and the Internet.
 Genetics and genomes, including cognitive neuroscience (brain science) and genetic engineering.
 Nanotechnology—the technology of the very very small.
 Big data. Not only is "big brother" watching you, big data is a powerful new aid to research, development, marketing, and so on.
Math is quite important in each of these areas! Thus, our math education system faces the ongoing challenge of helping to prepare students for life in a world where math is both an important discipline in its own right and is also an important part of our changing world. This challenge is becoming greater as the pace of technological change in our world continues to increase.
Students in a Math Methods course have quite varying insights into "What is mathematics?" As a teacher in such a course, you might want to have your students do an inclass discussion activity on that topic and/or some reading about it. For example, see What is Mathematics?.
Please read once more the quote from George Polya given at the beginning of this document. Math is an important area of study because it is a powerful aid to representing and solving problems. The mathrelated problems that a person encounters during their lifetime range from those that the person encounters over and over again to problems that the person finds somewhat novel to problems that are completely new to the person. No matter how much math a person learns, they are still faced by this range of mathrelated problems. A good math education curriculum prepares students to deal with a range of mathrelated problems that are appropriate to the abilities, interests, and needs of the person.
The discipline of math is also growing because of its use and importance in many other disciplines—and these are rapidly growing and changing.
I think you can see the challenges the above ideas bring to you, as a Math Methods teacher. Of course, these same challenges will face your students as they become teachers. Thus, you should give careful thought to how you will help to prepare your students for their futures as teachers of math and other disciplines.
You might want to use this challenge as a topic for a writing assignment, small group discussions, and whole class discussion. Exploration of this topic might also include investigation of the Math Education Wars discussed below.
Improving Math Education
A underlying and unifying theme in this document is that our math education system can be substantially improved. There tend to be three general approaches to working to improve our math education system:
 Do what we have been doing in the past, but do it better. This includes imposing more required math coursework, higher standards, and highstakes tests. Back to basics, "Algebra for all," and highstakes algebra testing as a requirement for high school graduation are some examples of this movement.
 Draw upon past and ongoing math educational research, and on progress in areas such as ICT and brain science, to implement significant researchbased changes in the content, pedagogy, and assessment in math education.
 Increase math education requirements. Make math instruction more rigorous, require more math, and increase the number of minutes a day that students study and/or use math.
Part of the Math Education Wars controversy is between those who favor the first approach above and those who favor the second approach. The third approach may include moving more math into kindergarten or preschool, or requiring students who are doing poorly in math to to take math in summer school.
There is substantial evidence that teachers teach the way they were taught. Let's use PreK8 school teachers who teach math as an example. These teachers first learned about how to teach math when they were very young children, learning from their parents, caregivers, and perhaps from older siblings. The math pedagogy education of these preservice teachers continued as they progressed through an elementary school and middle school math program of study. Still further continuation was provided by what they observed as they studied math in high school.
Thus, the typical preservice elementary school teacher knows a great deal about how math is taught before he or she takes any education courses, a Math for Elementary Teachers sequence, or Math Methods course. Teachers of preservice and inservice teachers know that it can be difficult to change this situation.
The use of calculators and computers in math classes provides an excellent example of resistance to change. The National Council of Teachers of Mathematics has supported the use of calculators in elementary school math education since 1980. Even now, more than 35 years later, a great many preservice and inservice math teachers make and implement their own decisions about whether calculators are appropriate or not. Thus, to a considerable extent, they do teach about and allow use of calculators, or they do not teach about and allow use of calculators, based mainly on their personal opinions.
It seems strange to me that after all of these years we still lack convincing research evidence on effective methods for making use of calculators in K8 math education, effective methods of preparing teachers to do this teaching, and on the long term effectiveness of these methods.
 As an "aside," when I first started recommending use of calculators in elementary school math education, I worried a little about whether this might influence the number of students who eventually would complete doctorates in mathematics. Perhaps the early use of calculators would warp or shape their minds so that they became less capable of learning more advanced mathematics? This simple question points out one of the difficulties in educational research. For the most part, educational researchers are not able to conduct studies that track the effects of an educational change over a decade or several decades before the change is widely implemented.
Some of the early work in computerassisted instruction (CAI) in school mathematics was done more than 55 years ago. Since then computers have become much less expensive, the theory of CAI has made considerable progress, the quality of CAI materials has been substantially improved, and there has been a very large amount of research on the use of and effectiveness of CAI in K12 math instruction.
So, paralleling my question about the use of calculators, I also ask if the costeffectiveness of math CAI in K8 education is such that these computer aids to teaching and learning math should now be a routine component of math education. I strongly believe the answer is "yes." And if the answer is "yes," shouldn't modern Math Methods courses ensure that all preservice K8 teachers have a high level of knowledge and skill in making use of this technology? It is not easy to work effectively with a classroom full of students, each using a computing device, and each at a different place in a lesson and/or in different lessons.
Math Content Pedagogical Knowledge
The importance of pedagogical content knowledge (PCK) in teaching is a relatively new idea pioneered by Lee Shulman. The basic concept is that good teaching involves knowledge of the content area being taught, general knowledge of how to manage and teach students, and specific knowledge about how to teach the content of the specific discipline being taught.
As a "far out" example, consider the challenge a research mathematician would face if asked to teach elementary school children about the number line. The research mathematician has a huge amount of math content knowledge in this area. This includes ideas about different sizes of infinity, rational, irrational, and transcendental numbers, repeating decimals, numbers to different bases, number theory, and so on. The math researcher can likely give a rigorous proof that (3) x (5) = (+15). But, how will this go over with students at various grade levels? What should be taught, how should it be taught, and how does one assess the results?
How does one explain the number line to a learning disabled second grader, an average second grader, or a talented and gifted second grader? What will each already know, and how does one help these varying students build new knowledge and understanding onto what they already know?
The students are both building their math models, and building upon their mental models of the number line. Many will eventually develop a useful visual model of the number line. How might a bead frame (or abacus), graph paper, or a variety of math manipulatives help in each case? What virtual manipulatives available free on the Web might help? What does one do for students who are inherently poor in spatial visualization and have difficulty "seeing" things in their mind's eye?
The importance of math PCK was researched in Liping Ma's doctoral dissertation and widely disseminated via her book:
 Ma, Liping (1999). Knowing and Teaching Elementary Mathematics. Mahwah, NJ: Lawrence Erlbaum.
Liping's doctoral research compared elementary school math education in the United States with that in China where she grew up. She makes it clear how math content knowledge and math pedagogical content knowledge of teachers differ between the U.S. and China. See Vikas Bajaj's 12/13/2013 interview with Liping.
Math Manipulatives
The previous section mentioned math manipulatives. Some people seem to view math manipulatives as a sort of toy for use by young children. Others see math manipulatives as a really valuable part of math education for children who are at the Concrete Operations and PreOperational stages of Piaget's 4stage cognitive development theory.
Marilyn Burns is a highly respected math educator. Quoting from her article, Seven Musts for Using Manipulatives:
 You find them in classrooms across the nation—buckets of pattern blocks; trays of tiles and cubes; and collections of geoboards, tangrams, counters, and spinners. They've been touted as a way to help students learn math more easily. But many teachers still ask: Are manipulatives a fad? How do I fit them into my instruction? How often should I use them? How do I make sure students see them as learning tools, not toys? How can I communicate their value to parents? Are they useful for uppergrade students, too?
 I've used manipulative materials at all levels for 30 years, and I'm convinced I can't — and shouldn't — teach without them.
The article then continues with sections about a number of important math manipulative topics.
Now we have both physical (concrete) manipulatives and virtual (computerbased) manipulatives. They each have some advantages. Doug Clements is an outstanding math education researcher. Here is an article (a golden oldie) that I consider to be a "must read" for preservice elementary school teachers:
 Clements, D.H. (1999). 'Concrete' manipulatives, concrete ideas. Contemporary Issues in Early Childhood. 1(1), 4560. Retrieved 2/8/2016 from http://www.didax.com/articles/concretemanipulativesconcreteideas.cfm. Quoting from this article:
 Students who use manipulatives in their mathematics classes usually outperform those who do not, although the benefits may be slight. This benefit holds across grade level, ability level, and topic, given that use of a manipulative "makes sense" for that topic. Manipulative use also increases scores on retention and problem solving tests. Attitudes toward mathematics are improved when students have instruction with concrete materials provided by teachers knowledgeable about their use.
 However, manipulatives do not guarantee success. One study showed that classes not using manipulatives outperformed classes using manipulatives on a test of transfer [of learning]. In this study, all teachers emphasized learning with understanding. In contrast, students sometimes learn to use manipulatives only in a rote manner. They perform the correct steps, but have learned little more. For example, a student working on place value with beans and beansticks used the (one) bean as ten and the beanstick (with ten beans on it) as one.
For a number of years in the United States, there has been funding for a national project on virtual manipulatives. See:
 Virtual Manipulatives (n.d.). National Library of Virtual Manipulatives for Interactive Mathematics. Retrieved 2/7/2016 from http://nlvm.usu.edu/en/nav/vlibrary.html.
The Math Learning Center (Full disclosure: I am on their Board of Directors) provides a number of free, highquality virtual manipulatives. See http://catalog.mathlearningcenter.org/apps.
Communicating in the Language of Mathematics
Communication lies at the very heart of education. This includes communication with oneself and communication with others. It includes communication over time and distance. For example, you know about Euclid and Pythagoras. They both are communicating with you over time and distance.
Teachers of math are helping their students gain increased expertise in oral and written communication in the language of mathematics. Thus, as you teach a Math Methods course you will want to role model communication in math and help your students gain an increased level in such communication and also in understanding why this is important to their future.
All preservice teachers learn about the idea of reading (or reading and writing) across the curriculum. However, most learn very little about reading and writing of math as being an important component of learning math. As you teach your Math Methods course, you may well want to make use of such strategies as having your students do journaling and regularly participate in small group and whole class discussions. You may well have them develop and/or modify some math lesson plans. You may want to insist that they read the textbook and other written material. All of these types of activities will give your students practice in communicating in math. (Many faculty find that this turns out to be a struggle. Think about giving a one or two question short quiz over the reading at the start of each class period as a leadin to this skill.)
Here is an activity that you might want to try out with your students. Have them individually answer the following question. Then have them discuss their answers in small groups and in a whole class debriefing.
 Think back over your own math content education. Try to remember a time in your precollege education when you were expected to learn some math by reading a math book. Assess yourself in your current level of skill in learning math by reading a math book.
The point to this activity is that, for the most part, precollege math tends to be taught by "oral tradition." That is, students are not expected to learn new math topics by reading about them in their math book, on a computer, or in written handouts.
There is a lot of good material on reading and writing in math education available on the Web. My 2/7/2016 Google search of the expression writing in math produced over 260 million results. Marilyn Burns has long been a world leader in this area. Here in one example of her "writing in math" resources available on the Web:
 Burns, Marilyn (2004). Writing in Math. Retrieved 2/7/2016 from http://www.mathsolutions.com/documents/2004_writing_in_math.pdf.
Here is another article that you might find useful:
 WolpertGawron, Heather (5/1/2015). 4 Tips for Writing in the Math Classroom. Edutopia. Retrieved 2/7/2016 from http://www.edutopia.org/blog/fourtipswritingmathclassroomheatherwolpertgawron.
The IAEpedia contains an extensive and quite popular document about Communication in the Language of Mathematics. Here are a few important ideas quoted from this document:
 Although one can spend a lifetime studying math and still learn only a modest part of the discipline, young children can gain a useful level of math knowledge and skill via "oral tradition" even before they begin to learn to read and write. Oral and tangible, visual communication in and about math is an important part of the discipline.
 Reading and writing are a major aid to accumulating information and sharing it with people alive today and those of the future. This has proven to be especially important in math, because the results of successful math research in the past are still valid today.
 Reading and writing (including drawing pictures and diagrams) are powerful aids to one's brain as it attempts to solve challenging math problems. Reading and writing also help to overcome the limitations of one's shortterm memory.
 The language of mathematics is designed to facilitate very precise communication. This precise communication is helpful in examining one's own work on a problem, drawing upon the previous work of others, and in collaborating with others in attempts to solve challenging problems.
 Our growing understanding of brain science is contributing significantly to our understanding of how one communicates with one's self in gaining increased expertise in solving challenging problems and accomplishing challenging tasks in math (and in other disciplines).
 Information and Communication Technology (ICT) has brought new dimensions to communication, and some of these are especially important in math. Printed books and other "hard copy" storage are static storage media. They store information, but they do not process information. ICT has both storage and processing capabilities. It allows the storage and retrieval of information in an interactive medium that has some machine intelligence (artificial intelligence). Even an inexpensive handheld, solarbattery 6function calculator illustrates this basic idea. There is a big difference between retrieving a book that explains how to solve certain types of equations and making use of a computer program that can solve all of these types of equations.
 We all understand the idea of a native language speaker of a natural language. Students learning an additional language will often progress better when taught by a native language speaker who can fluently listen, read, talk, write, and think in the language, and who is skilled in teaching the language. We prefer that this teacher be fluent in a "standard" version of the language and not have a local accent and vocabulary that would give pause to many native speakers of the same language. The same idea holds in math education. The math educational system in the United States is significantly hampered because so many of the people teaching math do not have the math knowledge, skills, and math pedagogic knowledge—and, most important, level of fluency—that would classify them as being math education native language speakers.
I have bolded the last paragraph because of its importance in math education. It is essentially an argument that elementary school mathematics should be taught by a specialist in math. Some countries do this, and others don't. The U.S. is one of the countries that has only modest math requirements in the preparation of elementary school teachers who then teach math as part of their everyday teaching schedule.
This is a good topic for class discussion in a Math Methods or a Math for Elementary Teachers course.
Good Math Lesson Plans
In a Math Methods course, students often study lesson plans written by others and/or create their own sample math lesson plans. They may be provided with a template for general lesson plan writing or one specifically designed for math lesson plans. A good example of such a mathspecific lesson plan template is available in this IAEpedia. It stresses many of the ideas included in the document you are currently reading.
The Good Math Lesson Plans Document mentioned above is one of the most popular entries in the IAEpedia. In 2012 this document served as a major resource in developing the following free book:
 Moursund, D. (March, 2012). Good Math Lesson Planning and Implementation. Eugene, OR: Information Age Education. Download the PDF file from http://iae.org/downloads/doc_download/230goodmathlessonplans.html. Download the Microsoft Word file from http://iae.org/downloads/doc_download/229goodmathlessonplans.html.
The following is quoted from this book:
 This book is not a compendium of math lesson plans. Indeed, it contains just a very few brief examples. You can find oodles of math lesson plans in books and on the Web. For access to a large number of math lesson plans that are available on the Web, see http://iaepedia.org/Sources_of_Math_Lesson_Plans.
 The accumulation of math lesson plans contributes to math education. However, if math education could be substantially improved by the accumulation and distribution of math lesson plans, math education would be rapidly improving. There is something missing in this “formula.” What is missing are the human and the “theory into practice” components.
 Each learner and each teacher is unique. As teachers and as learners we are not machines. Good lesson planning and implementation reflects the human capabilities, limitations, knowledge, and experience of both the teacher and the learners.
 There are some aspects of teaching in which computers can out perform human teachers. We are living at a time in which computerassisted learning and distance learning are gaining rapidly in capabilities, use, and importance. Good teachers and good teaching accommodate and make effective use of this major addition to the aids useful in teaching and learning. These newer aids, along with older aids, do not obviate the value of and need for good teachers and the need for good teachers. They do change the teacher’s job. Remember, it is the teacher plus aids to the teacher that facilitate good teaching.
 I think of a personalized math lesson plan as an extension of a human teacher. It supplements and extends the human capabilities of a human teacher. This is a unifying idea in this book.
Problembased and Projectbased Learning
Problembased learning is often used in teaching math. Quoting from ProblemBased Learning in Mathematics:
 Problembased Learning (PBL) describes a learning environment where problems drive the learning. That is, learning begins with a problem to be solved, and the problem is posed is such a way that students need to gain new knowledge before they can solve the problem. Rather than seeking a single correct answer, students interpret the problem, gather needed information, identify possible solutions, evaluate options, and present conclusions. Proponents of mathematical problem solving insist that students become good problem solvers by learning mathematical knowledge heuristically.
See the IAEpedia article on Math Problembased Learning. This document includes a number of examples. Quoting from the document:
 The main focus in this document is on problembased learning, where students in a class are assigned a challenging math problem. They may work individually or perhaps in teams. While the assignment sometimes continues over several class periods, more typically it is done in one class period and/or as a homework assignment.
Projectbased learning is less often used, but is a valuable part of the math education repertoire of many teachers. Information and discussion is available in the IAEpedia article [http://iaepedia.org/Math_Projectbased_Learning
Math Projectbased Learning.] Quoting from this IAEpedia document:
 This document provides an introduction to uses of Projectbased Learning (PBL) in math education. It includes arguments supporting use of PBL and it includes a number of examples that can be adapted for use in a wide range of math courses at the precollege level and in teacher education.
 Projectbased learning is a way to involve students in learning and using math. Projectbased learning is a good vehicle for helping students make progress on a number of math educational goals not directly covered in the "traditional" math curriculum. Not least among these goals is to help make math education a pleasant and rewarding discipline of study that adults will look back on with fond memories.
 The target audience for this document is preservice and inservice K12 teachers who teach math, and teachers of such teachers. Keep in mind that the overriding goal or purpose of this document is to improve math education. As a teacher, you should consider making use of projectbased learning when:
 1. You believe it will help to improve the quality of the math education your students are getting; and
 2. You believe it will help you learn more about teaching math and some of the ways in which your students learn math.
Prerequisites: A Delicate and Challenging Issue
This section examines both the prerequisites one might expect students in a Math Methods course to have met, and also the prerequisites needed to be an effective and successful faculty member in such a course.
Prerequisites for Math Methods Students
Here is an important question. In the Math Methods course that you teach, what is the math content knowledge and skills prerequisite? Many Math Methods teachers pass lightly over this delicate prerequisite situation. I strongly believe you are doing your students a disservice if you ignore the issue. And, it relates closely to the question, "How much of the very limited and very valuable time in your Math Methods course is used in math content remediation?"
As an aside, every math teacher at every grade level must routinely face the prerequisite issue in their daytoday teaching. So, it is an importation topic to cover in a Math Methods course. How do you effectively work with students who lack the prerequisite knowledge and skills you believe are necessary to the lesson you are teaching?
How do you determine if each of your students meets these math content knowledge and skills prerequisites? For example, you might make use of a "selfassessment" math content test that includes links to where a student can find good review and remediation materials. A variety of free college math placement tests are available online.
You might want to raise this prerequisite issue (for your students, and for their future students) near the beginning of your course. Bring the problem out into the open, and then role model an effective way of dealing with it. Help your students understand that forgetting the math content knowledge one has previously studied is common for almost all students. Your students can introspect (do metacognition) on how much of the math they studied in the past they have forgotten. You and your students can explore ideas on what is remembered over time, what is forgotten because it was never understood and/or is not used, and how past learning helps in relearning. In addition, this is a good time to discuss study skills. Cramming for tests (memorize, regurgitate, and forget) is a common study skill!
Another approach to this prerequisite for Math Methods topic is through use of a mathography assignment. In such an assignment, students write about and reflect on their math backgrounds, experiences in and out of school, and attitudes. (My 2/7/2016 Google search of the expression mathography produced over 5,000 results. This activity can be used with upper elementary school students and above.)
Taking personal responsibility is one of the things to stress in these prerequisite activities. Every student needs to learn to take personal responsibility for meeting prerequisites in a course. This type of learning and responsibilitytaking needs to be fostered, beginning at the earliest grades in school. Among other things, this means that every teacher needs to have knowledge and skill in helping students learn to selfassess and selfremediate. By the time students finish high school, they should be quite skilled in this area of their education.
These same types of issues apply to your students' knowledge and skills in the area of calculators and computers. Of course, you and your students know how to use a calculator. However, do you and they know how to use and how to explain the use of the M+, M, MR, and MC keys on an inexpensive calculator? Do they know how to explain and deal with limited precision decimal arithmetic? How does the calculator's number line compare with the real number line? How does one learn to detect and correct calculator keyboarding errors? These types of questions are important to your students and to the students they will teach.
Next, consider computers and the more expensive calculators. Software now exists that can solve many of the types of problems students study in math courses up through the first two years of college. If a calculator or a computer can solve a particular type of math problem, what do we want students to be learning about solving that type of problem using byhand methods? This is a difficult question. If you are not comfortable and convinced in your own personal responses to this question, how can you expect your students to learn to deal with it?
And, speaking of problem solving, what do your students really know about problem solving? Do they realize that problem solving is not only a key idea in math, it is also a key idea in every academic discipline? Do they understand how math can be used as an aid to helping solve the problems in nonmath disciplines? Do they know how to integrate math problem solving throughout the nonmath curriculum?
Here is an activity that you might want to use with your students near the beginning of the term. It is a short quiz that can be done by students working individually and then debriefing in small groups. It is not an activity to be turned in and graded. By listening to the small group discussions, and later through a whole class debriefing, you can gain some insights into the math backgrounds and understandings of your students.
 Give an example of a math problem that has exactly one correct answer.
 Give an example of a math problem that has exactly two correct answers.
 Give an example of a math problem that has an infinite number of correct answers.
 Give an example of a math problem that has no correct answer.
Part of the goal of this activity is to break students of the habit of talking about "finding the answer" to a math problem or to a problem in any other discipline.
Variations of this activity can be used at other times during the course. For example, what kinds of problems do historians (or name any other nonmath discipline) try to solve? How do they make use of math in such endeavors? What aspects of problem solving that one learns by studying math are applicable to problem solving in other disciplines such as the social sciences, fine arts and performing arts, and so on?
Prerequisites for Math Methods Faculty
This is another delicate issue. What constitutes a good preparation to be a teacher of a Math Methods course?
Here is my opinion. A good teacher of a Math Methods course needs to greatly exceed the prerequisites expected of students in the course. Moreover, the faculty member needs to know a great deal about elementary school students, their capabilities and limitations, how to help them learn, uses of math in everyday life and in nonmath disciplines of study, and so on.
In addition, there are more specific areas and specific topics very related to education such as:

 How do you detect if a student has dyslexia, dysgraphia, or other brain disabilities that relate to learning and doing math? What are some other brainbased differences in students that are relevant to earning and doing math?

 Computational thinking is taking into consideration the capabilities and limitations of calculators and computers as one is learning and using math to represent and solve problems. It includes computer modeling—a subject that is highly dependent on math modeling.

 What constitutes "good" computerassisted and distance learning materials. Are there substantial differences in various students' abilities to make effective use of these learning aids? What materials of this type are now widely used in elementary schools and in the homes of elementary school students?

 What learning theories are particularly relevant to learning and teaching math? What are good ways to teach for transfer of math learning to problem solving outside of the classroom and to problem solving in the various disciplines students study in school?

 Math maturity increases through appropriate instruction and learning experiences, and also as one's brain matures. How can you tell if a student has achieved a level of math (cognitive) ability to learn and understand a particular math topic?

 Problem solving lies at the heart of mathematics. How does one integrate problem solving into every math lesson? How does one assess a student's progress in getting better at problem solving? Can students learn to effectively selfassess in this aspect of learning math?

 Logical/mathematical is one of the nine areas of intelligence that Howard Gardner discusses in his theory of multiple intelligences. How does one effectively teach math to a group of students having a wide variation in their math IQs?

 Ask the same question that given above. A typical elementary school class may have one or more students who learn math half as fast (and not as well, and with lower retention rates) as average students, and one or more who learn math twice as fast (and better, and with grater retention rates) as average students. Remember that this situation tends to continue for the students year after year.
 Uses of games in education. Games tend to be intrinsically motivating to students. What are some effective ways games can be used in math education at the elementary school level?
It is easy to extend this list of faculty prerequisites. Perhaps now you understand why I believe that it is such a challenge to be a good teacher of the Math Methods course!
Learning Theories in Math Education
The previous sections included learning theory as an an important topic. Research in education, and specifically in math education, has led to the development of many different learning theories. Thus, you are probably familiar with several such theories.
Here is an idea to try out with your Math Methods students. In a whole class or small group discussion mode, ask your students to name some of the learning theories they are familiar with. Then have them name one or two that they believe are especially important in math education at the elementary school level, and explain why these are especially important.
My personal response includes:
 Constructivism.
 Transfer of learning: Highroad and Lowroad transfer of learning.
There are, of course, many more learning theories. The next two subsections discuss the two I have listed.
Constructivism in Math Education
Constructivism is a learning theory that provides a good example of the difficulty faced by teacher education programs. In brief summary, the theory says that students learn by building, or "constructing," upon their previous knowledge and understanding.
Catherine Fosnot is the director of Math in the City, a research and development project that provides teacher training in constructivist practice, aligned with the NCTM Standard. She is an international leader in constructivism in math education.
Constructivism is applicable in any discipline. It is especially important in math education. Quoting from the linked site:
 What is Constructivism? "Students need to construct their own understanding of each mathematical concept, so that the primary role of teaching is not to lecture, explain, or otherwise attempt to 'transfer' mathematical knowledge, but to create situations for students that will foster their making the necessary mental constructions. A critical aspect of the approach is a decomposition of each mathematical concept into developmental steps following a Piagetian theory of knowledge based on observation of, and interviews with, students as they attempt to learn a concept."
Piaget, for example, was a strong supporter of constructivism. Quoting from the linked site:
 A central component of Piaget's developmental theory of learning and thinking is that both involve the participation of the learner. Knowledge is not merely transmitted verbally but must be constructed and reconstructed by the learner. Piaget asserted that for a child to know and construct knowledge of the world, the child must act on objects and it is this action which provides knowledge of those objects (Sigel, 1977); the mind organizes reality and acts upon it. The learner must be active; he is not a vessel to be filled with facts. Piaget's approach to learning is a readiness approach. Readiness approaches in developmental psychology emphasize that children cannot learn something until maturation gives them certain prerequisites. The ability to learn any cognitive content is always related to their stage of intellectual development. Children who are at a certain stage cannot be taught the concepts of a higher stage.
Now, think about what a preservice elementary teacher might have learned about constructivism before beginning to take teacher education courses. The whole idea of prerequisites is based on constructivism. Thus, preservice teachers have repeatedly experienced lessons in which their teacher begins by reviewing some of the prerequisite knowledge assumed in a lesson.
This is a constructivist approach—but most teachers do not make it explicit that they are using a constructivist approach. Moreover, math is a vertically structured discipline of study. Thus, any new material may well draw upon (be built on) content that a student has supposedly learned in previous math instruction in the past weeks, months, and years. However, it is not feasible to begin each new math lesson with a review of all previous math lessons.
This may well be the root of the "I can't do math" beliefs of many adults. In a verticallysequenced course of study, it is quite easy for a student to encounter new material that assumes prerequisite knowledge and skills that were previously covered, but that were not understood and/or learned very well by that student.
As a Math Methods teacher, you probably will want to role model constructivist math teaching and learning, both to help your students with the current lesson and to help them to gain an increased level of expertise in constructivism.
Highroad and Lowroad Transfer of Learning
Teaching for transfer is one of the seldomspecified but most important goals in education. We want students to gain knowledge and skills that they can use both in school and outside of school, both immediately and in the future.
The following free book strongly emphasizes and illustrates teaching for transfer of learning.
 Moursund, D. (January, 2016). Learning Problemsolving Strategies Through the Use of Games: A Guide for Teachers and Parents. Eugene, OR: Information Age Education. Download the PDF file: http://iae.org/downloads/freeebooksbydavemoursund/279learningproblemsolvingstrategiesthroughtheuseofgamesaguideforteachersandparents1.html. Download the Microsoft Word file: http://iae.org/downloads/freeebooksbydavemoursund/278learningproblemsolvingstrategiesthroughtheuseofgamesaguideforteachersandparents.html.
Quoting from this book:
 The lowroad/highroad theory of learning has proven quite useful in designing curriculum and instruction (Perkins & Solomon, September, 1992). In lowroad transfer, one learns something to automaticity, somewhat in a stimulus/response manner. When a particular stimulus (a particular situation) is presented, the prior learning is evoked and used. The human brain is very good at this type of learning.
 Lowroad transfer of learning is associated with a particular narrow situation, environment, or pattern. The human brain functions by recognizing patterns and then acting upon these patterns. Consider the situation of students learning the single digit multiplication facts. This might be done via work sheets, flash cards, computer drill and practice, a game or competition, and so on. For most students, onetrial learning does not occur. Rather, a lot of drill and practice over an extended period, along with subsequent frequent use of the memorized facts, is necessary.
 Many students find that they have difficulty transferring their arithmetic fact knowledge and skills from the learning environment to the “using” environment. One of the difficulties is recognizing when to make use of the memorized number facts. In school, the computational tasks are clearly stated; outside of school, this is often not the case.
 This helps to explain why rote memory is often useful in solving routine, frequently occurring problems, but critical thinking and understanding are essential in dealing with novel and challenging problems. It also supports the need for broadbased practice even in lowroad transfer. We want students to recognize a wide range of situations in which some particular lowroad transfer knowledge and skills is applicable.
 Math education in schools tries to achieve an appropriate balance between rote memory and critical thinking by making extensive use of word problems or story problems. In word problems, the computations to be performed are hidden within a written description of a particular situation. The hope is that if a student becomes better at reading and deciphering word problems—extracting the computations to be performed and the meaning of the results—that this will transfer to nonschool problemsolving situations and solving math problems in other disciplines.
 It turns out that it is quite difficult to learn to read well within the discipline of mathematics. Many students have major difficulties with word problems and with learning math by reading math textbooks. Their depth of understanding of math and their ability to read math for understanding stand in the way of their being able to deal with novel, challenging math problems they encounter.
 Highroad transfer of learning for improving problem solving is based on learning some generalpurpose strategies and learning how to apply these strategies in a reflective manner. The build on previous work strategy is an excellent candidate to use to begin (or, expand) your repertoire of highroad transferable problemsolving strategies. To do this, think of a number of personal examples in which you have used this strategy as an aid to problem solving. Mentally practice what you did in each case. In the near future, each time you make use of this strategy, consciously think about its name and the fact that you are using it. Also, in the future when you encounter a challenging problem, consciously think through your repertoire of highroad transferable problemsolving strategies. Your goal is to increase your ability to draw upon this repertoire of aids to use when faced by a challenging problem.
 The break a problem into smaller problems is another example of a highroad transferable strategy. This strategy is often called the divide and conquer strategy, and that is the name that will be used in the remainder of this book. It is helpful to have short, catchy names for strategies. A large and complex problem can often be broken into a number of smaller, more tractable problems. It is likely that many of your students do not have a name for the strategy and do not automatically contemplate its use when stumped by a challenging problem.
A Teacher's Collection of Professional Resources
Over the years of preparing to become a teacher and then being a teacher, every teacher builds a personal professional collection of teaching resources. Many of these resource materials are stored only in the teacher's brain. However, quite a bit can also be stored in physical filing cabinets, on shelves, and electronically in computers.
Personal Knowledge and Skill
A teacher's personal mind/body knowledge and skills are used for just in time decision making and implementing the decisions. Talking to a class, responding to a question, observing and facilitating a group of students engaged in a team activity, and writing on a chalkboard/whiteboard/smartboard all require making use of one's mental and physical knowledge and skills. In essence, these are all rapid response situations.
Reading and writing allow us to supplement the knowledge and skills we store in our heads. Skill in storing, retrieving, understanding, and making use of retrieved information is now one of the basics of education. All students need to develop their own personal balance between what they store in their heads, store on paper, and store in computerized information storage and retrieval systems.
Mental and physical knowledge and skills improve through practice (including studying) and use. Both decline from one's peak performance level through disuse. This decline from peak performance is a key concept in teaching and learning. Most students forget most of what is covered in a course unless they are in a situation where it is is used and the knowledge and skills are periodically refreshed.
So, as a teacher of teachers, you should think about this very carefully. Suppose that your students will forget well over threefourths of what you cover in your class by the time a year has gone by. How does this knowledge affect what and how you teach preservice math teachers?
 One of the things that we know is that relearning can be quite a bit faster than initial learning. What do you do in your teaching to help students prepare for the relearning tasks they will encounter throughout their professional careers?
 What parts of the content do you really really want your students to remember for a very long time? Is it the same for each student? Note how this ties in with constructivism and with individual differences. This is a challenging question.
 When your students become teachers and begin to teach math, what do you want them to do for their students in terms of the two questions given above?
An elementary school teacher faces the challenges and responsibilities discussed above over the full range of courses he or she is teaching. The Math Methods teacher needs to focus special attention on the mathrelated aspects of these challenges and responsibilities.
Physical Materials: Physical Filing Cabinets
Think of some of the physical things that an elementary school math teacher is apt to want to have readily available. These might include:
 A personal library of mathrelated books, journals, magazines, and articles.
 Mathrelated books and pamphlets for student use.
 Mathrelated teaching supplies for use by the teacher and students. This might include a classroom set of rulers, protractors, compasses, calculators, math manipulatives, colored pencils, colored chalk or white board markers, colored paper, graph paper, geoboards, and so on.
 Equipment to project material on a screen. An overhead projector with acetate "slides" and erasable markers is still a valuable aid. A computer system with projector and/or a document camera are more "modern" aids. A collection of frequently used black line acetate masters for use with an overhead projector. Various sizes of graph "paper" provide a good example.
 Grade books, samples of work done by students in the past, and perhaps a studentcreated plus teachercreated math portfolio for each student.
 CDs and DVDs (and perhaps also videotapes) used in teaching math.
 Etc.
Some of these materials will be supplied by the school, and some will be in a teacher's private collection, often purchased with the teacher's own money.
 Here is an aside. What happens when a teacher moves to teaching at a different grade level or moves to another school or district?. It would surely help if all of one's own personal materials were carefully labeled and/or on an inventory list. It would also help a preservice teacher to know what materials are apt to be (should be) supplied by the school.
If the total collection of physical resources is relatively small and is used frequently, then it may well be possible to remember where everything is, when it will be needed, how it will be used, and so on. The retrieval process might be completely dependent on one's own mental storage and retrieval capabilities.
However, as the collection grows, many teachers find this organization and retrieval task to be mentally overwhelming. The use of physical filing cabinets to deal with the paper parts of such a collection goes back more than a hundred years. With a little instruction or through trial and error, teachers learn how to organize paper materials into file folders and store the folders in alphabetical or subject matter order in a filing cabinet. While this may seem like a simple task, it isn't. Where do you file a document that might well fit into several different folders? How do you find such a document years later?
Virtual Materials: Personal Digital Filing Cabinets (PDFC)
I have incorporated the idea of a personal digital filing cabinet (PDFC) into a number of courses that I have taught. I have found it useful for every student in my classes to have a PDFC, to add to it during the course, and to develop/find materials that others in the class may want to add to their own PDFCs.
A student's PDFC might be stored as word processed documents, spreadsheets, and other files on the student's personal computer. Alternatively or in addition, parts or all of it might be stored on the Web.
My PDFC consists of two parts. First, I have a specific website where I store math materials I want to share with others and refer back to from time to time. As of 2/3/2016 this file has had nearly 60,000 hits—mostly from people other than myself.
Second, I consider the entire IAE collection of materials to be a personal digital filing cabinet. I make use of these materials many times a week, and I spend much of my spare time adding to this collection. Over the years, I have developed a large collection of Math Education Quotes as well as a collection of more general educational quotes, Quotations Collected by David Moursund. I make frequent use of these in my writing, and the math quotes have proven to be a very popular page in the IAEpedia.
The key idea in a PDFC is that the person who creates and maintains the file has invested the time to thoroughly peruse and understand its contents. Thus, for example, I recently did a Google search of the expression free math education videos. I got over 90 million results. I can file away in my brain that there are likely a very large number of free math education videos, and I might add to my PDFC this fact and a few key Web addresses. But, what I really need to do is to go to some of these sites and view a number of videos. I need sufficient personal knowledge of the video links that I put into my PDFC so I know each is suitable for use in my teaching. After I have used it with my students, I will add some comments about its effectiveness to my PDFC.
The Web
Here is an comparison I find useful. A PDFC is to the Web as the books in one's personal library are to a gigantic public library. I have personal ownership of my PDFC and of my books. I am familiar with their contents. They are like an auxiliary memory for me.
The Web is not only the world's largest library, it also provides access to software that can help to solve a wide variety of problems and accomplish a wide variety of tasks.
Every person teaching math is faced by the issue of what students should learn to do mentally, what they should learn to do with "simple" aids such as pencil, paper, ruler, and other "by hand" tools, and what they should learn to do with more powerful aids such as calculators, computers, and the Internet.
People who use math in their everyday lives and occupations make personal decisions based on their knowledge and skills, availability of aids, requirements of a job, and so on. Eventually they develop "ownership" of their personal ways of doing and using math.
As you know, math has both great breadth and great depth. One aspect of learning math is learning to build on the accumulated available mathematical knowledge. A modern education prepares students to gain the knowledge and skills to make use of the readily available accumulated knowledge of the human race.
Thus, I believe that in each area that students study, they should be learning to make use of the accumulated knowledge that is available to them. I believe that you, as a Math Methods teacher (or, as a student in such a course) need to openly address this issue. This means, for example, that Math Methods students should receive explicit instruction in how to search for, retrieve, read and understand, and use "math stuff" available on the Web.
Supportive Professional Organizations
In my home state (Oregon) we have a professional organization Teachers of Teachers of Mathematics (TOTOM). It has annual meetings and a website. Quoting from the link:
 TOTOM is dedicated to providing a forum for people involved in the training of mathematics teachers. Each year during September TOTOM organizes a meeting for the sharing of information on teacher licensure and training. This includes both elementary, middle, and high school teacher training. Members are typically members of the mathematics and education departments of the community colleges, universities and colleges in Oregon.
It is my observation that many teachers of Math Methods courses and Mathematics for Elementary Teachers courses work in relative isolation. Many teacher education programs have only one or two faculty members who teach the Math Methods course for preservice elementary school teachers, and many Math Departments have only a few faculty who teach the course Mathematics for Elementary Teachers.
Not infrequently, one of both of these courses is taught by adjunct faculty members who are only on campus when they are teaching their course and holding their office hours. Others may be teaching the courses completely online. Thus, many of these teachers of preservice math teachers have relatively little regular opportunity for close and continuing professional interaction with others in their field.
My suggestion is that the profession of being a teacher of teacher of preservice and inservice math teachers can be improved by a greater emphasis on building local and regional communities of practice.
And, of course, there are state and national structures to help such faculty. Most states have a state math organization that is affiliated with the National Council of Teachers of Mathematics. The National Council of Supervisors of Mathematics is a valuable player in Math Education. The Association of Mathematics Teacher Education provides links to 18 professional societies.
Sustainability as a Math Education Topic
You may think that this short section is somewhat "off the wall" and outside the realm of preparing K8 or K12 teachers of mathematics. However, a great many people believe that sustainability is a major problem facing the people of our world. Quoting from the Wikipedia:
 One of the first and most oftcited definitions of sustainability, and almost certainly the one that will survive for posterity, is the one created by the Brundtland Commission, led by the former Norwegian Prime Minister Gro Harlem Brundtland. The Commission defined sustainable development as development that "meets the needs of the present without compromising the ability of future generations to meet their own needs." The Brundtland definition thus implicitly argues for the rights of future generations to raw materials and vital ecosystem services to be taken into account in decision making.
It is possible to incorporate the sustainability idea into the content of many different courses. For example, language arts students might be given assignments that include reading and writing about sustainability. In science they might study the effects that dams have on efforts to sustain fish populations.
Many math textbooks used at the precollege level include examples that can be construed to being related to sustainability. For example, here is a word problem:
 Mary wants to buy a cashmere sweater that costs $62. She has an allowance of $3.50 a week. She figures that she can save $2 per week from this allowance. How many weeks will it take her to save enough money to buy the sweater?
Ask yourself: Is this word problem realistic for most students? What if you are a student living in poverty? I enjoy collecting Math Word Problems Divorced from Reality.
Notice that the cashmere sweater problem is a consumptionoriented problem situation. Mary has income and she "wants" to buy a cashmere sweater. There is no indication of why she wants the sweater or if she "needs" the sweater. What is cashmere? Are there other types of sweater fabric that could be more sustainable? How does this tie in with Mary's carbon footprint?
Aha! At what age can students begin to understand some of the basic ideas of sustainability, carbon footprint, ways to save energy, and so on? Are there math problems that are appropriate to the math curriculum for young students that can help to teach and support sustainability?
It seems to me there are two goals here:
 Help preservice and inservice elementary school teachers of math realize that they can and should be teaching students about mathrelated aspects of sustainability.
 Provide some guides to resources that will help in teachers implementing such ideas.
A number of websites aid users in calculating carbon footprints.
Author
This document was written by David Moursund.