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Don Cohen  
Materials for sale for K12 students, teachers and parents; precalculus. Materials include Get Ready for Calculus (Calculus By and For Young People book, CDROM, worksheet book, videotapes and map) and Changing Shapes with Matrices. Patterns, visualization, understanding, learn to learn, and start early. Don Cohen's books, videotapes and 'a map to calculus' show what young people have done with infinite series, infinite sequences, algebra, coordinate geometry and transformations with matrices. Most work is done with visualizing using graphs, diagrams, pineapples, the chambered Nautilus, mirrors, cookies, geoboards, rods, the tower puzzle, etc. Directions for writing the computer programs that are in almost every chapter are in the appendix of the worksheet book. Emphasis is on looking for patterns and there are many science applications. The students use a lot of arithmetic, but are involved in important mathematical ideas. The book was reviewed in the Dec.'88 issue of Scientific American.  


Levels:  Elementary, Middle School (68), High School (912) 
Languages:  English, Japanese 
Resource Types:  Multimedia, Video, Lesson Plans and Activities, Educational Vendors, Books 
Math Topics:  Basic Algebra, Matrices, Patterns/Relationships, Sequences and Series, Coordinate Plane Geometry, Sequences and Sets 
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