Students' difficulty with reasoning and justification in the context of proofs in geometry has been well documented. Studies reveal that many of the ideas that students are asked to prove are known to be true, and therefore, the process of such proof is likely to remain meaningless and purposeless. The implication of this claim is that students…

Presents an Applesoft computer program to help students translate abstract sentences into concrete visible lines and thereby discover and confirm facts about slopes, intercepts, angles, and intersections. The program graphs and analyzes lines, given as equations of the form Y equals M times X plus B. (JN)

This CD-ROM contains the lectures, abstracts, workshops, and posters of all participants in the Third International Conference on Technology in Mathematics Teaching (ICTMT 3). Various topics on teaching mathematics with technology are reviewed and some software and demos are also included. Main talks focus on such topics as graphing calculators,…