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Rapid and widespread reform in the teaching of mathematical and computational sciences is essential if this nation is to retain (or regain) technological, economic, and social leadership in the community of nations. Some effective strategies, such as the calculus reform movement, have already demonstrated that widespread change is possible (and have(More)
The author presents a family of shape modifying algorithms together with data structures for representing the shapes upon which the algorithms act. The author has implemented a computer program called Alchemist which incorporates these algorithms and their associated data structures. He shows that the program can generate representations of all of the(More)
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