Fractals: The Patterns of Chaos John Briggs In this colorful book the author communicates, even to the lay reader, the beauty and mystery of fractals. He cites many examples of fractals in nature including the branching pattern of trees, the human circulatory system, a coastline of a country or continent, clouds in the sky, a mountain range, the shapes and features of celestial objects, and many more. The book contains over 170 illustrations—many of them in beautiful color. It describes how fractals were discovered, how they are formed, and the properties fractals share. A special bibliography lists fractal generating software for computers. 192 pages 741 Fractals: The Patterns of Chaos $22.95 Discontinued Iteration A Tool Kit of Dynamics Activities Choate, Devaney, Foster To iterate means to repeat a process over and over again. Iteration was used by the ancient Greeks in computing approximations of &Mac185;. The topic is now popular because of the advent of computers, which handle iterative processes with speed and accuracy. In geometry, mathematicians use iteration tools to create fractals. Restricted permission to duplicate for classroom use is granted by the publisher. This material is especially suited to algebra. Grades 7- 12. 747 Iteration $20.95 Fractals A Tool Kit of Dynamics Activities Choate, Devaney, Foster This book, along with Iteration, offers a non-intimidating introduction to the study of iteration and fractal geometry. Includes teacher’s notes containing prerequisites, curriculum connections, a suggested lesson plan, assignments and lesson notes. Technology tips indicate where graphing calculators, spreadsheets, computer graphic applications, or the world wide web can enhance a particular lesson. Contents 748 Fractals $20.95 Chaos A Tool Kit of Dynamics Activities Choate, Devaney This book introduces and explores the mathematical phenomenon known as chaos. One of the major topics for discussion is the "butterfly effect," in which very small changes in the initial configuration of a system lead to great discrepancies eventually. To study this effect you will use a graphing calculator and spreadsheet software. Chaos works especially well as a supplement to the algebra curriculum. Grades 7-12. 7482 Chaos $20.95 The Mandelbrot and Julia Sets A Tool Kit of Dynamic Activities Devaney This book, the last in the Tool Kit Series, delves into the study of complex dynamics through the intricate images discovered by Benoit Mandelbrot. Students can experiment with a process called "linearization"—taking an intractable problem and approximating it with one that is solvable. This is an exciting new area of study and meshes nicely with topics covered in algebra courses. Grade 9-College. 7483 The Mandelbrot and Julia Sets $20.95