Investigates the development of shape concepts within an instructional unit on geometric paths, including the role of noncomputer and computer interactions in that development. Concludes that the computer environment and the activities facilitated students' development of their conceptualizations of the properties of geometric shapes and their…

Discusses the issue of proof in school geometry and views dynamic software as an excellent tool for exploration in geometry classes, mathematical practice, and for helping students see that a theorem is true. Argues that justification without proof would be untrue to the theory and practice of mathematics. Contains 32 references. (ASK)

Describes a form of adaptive communication, referred to as single switch technology, as a method for assessing and developing mathematics skills of speech and motor disabled students. Provides a BASIC program to illustrate a basic single switch mathematics program. (MDH)