In this brief review, research on varying types of instructional materials is summarized. The evidence indicates that the textbook is the most widely used instructional material, and few teachers appear to use any other materials more than five times a year. Research findings on the value of the use of manipulative materials seems clear: they have…

Suggestions for using four-function calculators, programmable calculators, and microcomputers are considered in this collection of 36 articles. The first section contains articles considering general implications for mathematics curricula implied by the freedom calculators offer students from routine computation, enabling them to focus on results…