This article draws attention to the use of color in mathematics instruction. Several examples are given, such as Cuisenaire rods, number lines, magic squares, and combinatorial problems. (MP)

Four features of teaching aids which endure are identified and discussed, and the nature of the electronic calculator as a teaching aid is analyzed. (DT)

The author argues that hand calculators are increasingly available to all students and the mathematics educators should immediately begin exploring methods of using calculators to improve mathematics instruction. (SD)

A version of the game lotto or bingo that is useful in learning geometric concepts is described. (MK)

In this statement the Instructional Affairs Committee of the National Council of Teachers of Mathematics identifies and justifies nine key uses of the hand-held calculator in the mathematics classroom. Examples of each use are provided. (SD)