# Math Made Visual: Creating Images for Understanding by Roger Nelsen, Claudi Alsina

By Roger Nelsen, Claudi Alsina

Usually, tips to train an explanation is by way of drawing a picture that illustrates the information. whereas arithmetic relies on summary ideas, people are creatures whose instinct is basically in keeping with photographs. This e-book describes many ways during which options should be visually represented and those pictures really are worthy one thousand symbols. half I comprises twenty chapters, that are called:

*) Representing numbers via graphical elements
*) Representing numbers by way of lengths of segments
*) Representing numbers by way of components of aircraft figures
*) Representing numbers via volumes of objects
*) opting for key elements
*) using isometry
*) using similarity
*) Area-preserving transformations
*) Escaping from the plane
*) twiddling with numerous copies
*) Sequential frames
*) Geometric dissections
*) relocating frames
*) Iterative procedures
*) Introducing colors
*) Visualization by way of inclusion
*) Ingenuity in 3D
*) utilizing 3D models
*) Combining techniques

Each bankruptcy has a number of sections the place a particular form of challenge is tested in every one part. for instance, the 3 sections of bankruptcy 1 are:

*) Sums of strange integers
*) Sums of integers
*) Alternating sums of squares

Each bankruptcy terminates with a bit known as "challenges", that's a suite of difficulties which are to be solved by means of growing photographs just like these confirmed within the bankruptcy. tricks and strategies to those difficulties are supplied in an appendix. half II of the e-book is named "Visualization within the school room" and is a quick heritage of visualization and an illustration of ways actual gadgets can be utilized to demonstrate the suggestions.
this is often a superb math ebook, demonstrating the various absolute best ideas that may be used to enhance and clarify an evidence. it's not attainable to take advantage of a diagram to give each mathematical facts that you could be clarify in your scholars. in spite of the fact that, it may be performed extra usually than you'll discover, so i like to recommend that each one academics of arithmetic study this e-book, you almost definitely will discover a gem for you to use.

Published in magazine of leisure arithmetic, reprinted with permission.

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Additional resources for Math Made Visual: Creating Images for Understanding Mathematics (Classroom Resource Material)

Sample text

The same general principles can be applied to young children’s beginning understanding of multiplication and division problems. These findings are remarkable because they suggest that children are far better at arithmetic far younger than textbook scope and sequence would have us to believe. The majority of children as young as kindergarten can make sense of, understand, and solve successfully, addition, subtraction, multiplication, and division problems given a n appropriate set of mathematical experiences.

We did not just jump into teaching. We were trained for years in college, and then tried our hands at it with some supervision. In addition, those of use who have been out in the schools for some time have developed routines for classroom management and teaching content with which we feel comfortable. It took years to develop these attitudes, knowledge, and routines. - Preplanning Activities for Dealing With Change 1 Understand \\hat ) n u n m t )'our students to le,m Explore a\'enues that you f x i I1 t a t e that I ea rn I ng ~ ~ 1 help 1 1 2.

As president, Susan gets $2 for every$1Joseph makes. All profit made by the company goes toward salaries. 1. If Susan makes \$30,000 in salary this year, how much does Joseph make? 2. What is the total amount of salary paid out to the employees? 3. What percentage of the total salary do Susan and Joseph receive? 4. Imagine Sue and Joe’s Cookie Emporium becomes very successful. Susan and Joseph want to be able to figure out their salaries for any amount of profit. Describe a way they can do this.