BOOKS Ahl, David (editor) Computers in Mathematics: A Sourcebook of Ideas. Creative Computing Press, Morristown, N.J. 07960, 228 pages, $15~95. This collection of articles from Creative C~nputin~ spans a wide range of topics related (some rather distantly) to school mathematics. There are chapters on problem solving, simulations, probability,graphics, CAI and programming style. Also some useful resource material may be found in chapters entitled "Mathematical miscellany', "short programs", and "puzzles, problems, and programming ideas." 77 articles include 250 programs. We would expect it to be a very useful resource for any math teacher who intends to use computers in a major way in teaching. Pugh-Roberts Associates, Inc. System Dynamic in Education. 5 Lee St., Cambridge, MA 02139, $I.00o This 33 page book is c r ~ e d with information for teachers who might want to have their students learn about system dynamics, an important form of simulation developed originally by Jay W. Forrestero Quoting from the introduction: The booklet consists of four sections. Section 1 discusses the need for systems thinking in high school and college curricula. The use of a simple diagramming technique for understanding systems is also explained. Section 2 discusses DYNAMO as an educational tool. Included are examples of how a variety of colleges currently use DYNAMO. Section 3 provides several examples of DYNAMO models. These models can be entered onto a computer with DYNAMO and used as examples. They also show.t he,ease with which this type of model can be understood. Section 4 provides further sources about system dynamics including an annotated bibliography and list of published models. Rather than attempt to provide a complete list of system dynamics materials, this section lists some materials most suitable for use at the high school and undergraduate levels. A comparision volume to this one is the "kit" by Nancy Roberts (see below). Roberts, Nancy Dynamic Feedback Systems Kit. Pugh-Roberts Associates, Inc., 5 Lee St., Cambridge, MA 12139, $4.00. This 90 page book can be used to teach basic systems concepts based on the concept of the "feedback loop." It is written for use by elementary teachers but has apparently been adapted to use in executive development programs and undergraduate courses. There are four sections: (1)a discussion of how to use the materials, (2)a set of exercises involving the explanation of causal loops diagrams, (3)a set of stories from which causal loop diagrams are constructed, and (4) suggested solutions to the stories.
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