Repeatedly taking the square root with a calculator yields numbers with logarithmic-type properties, which can be used to define the logarithm functions. (MP)

Advantages and disadvantages of using electronic calculators in the mathematics classroom are discussed; implications for the teaching of mathematics and for the mathematics curriculum are considered. (DT)

An account is given of the use of the calculator and Cuisenaire rods in examining decimals that result from the division of whole numbers. (MP)

A possible solution is discussed to the problem of what mathematics to teach low achievers. The three main aspects are very basic mathematics, calculators, and confidence. (MP)

Activities are described in which the calculator is used for extending students' knowledge of place value and of basic arithmetic operations. (DT)

Four categories of abuses are discussed: calculations, games and puzzles; mystical button pushing; and checking answers. Useful activities are illustrated for the categories of calculations, patterns, exploration, applications, and new content. (MP)

The place of binary arithmetic in the curriculum is discussed, then uses of binary coding for methods of automatic error correction in computers and calculators are analyzed. (DT)