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

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)

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)

An example of a lesson involving calculators that focused on calculator use is given. An examination of the traditional algorithm by the students led to student-directed investigations. (MP)

How the use of calculators can illuminate mathematics and improve the level of problem-solving discussion in classes is presented. (MP)

Exercises designed to aid students to practice or apply particular mathematical concepts and/or relationships using calculators are promoted, with four specific reasons for allowing this kind of activity. Specific cases dealing with number relationships and estimation are covered as examples. (MP)

Several examples of games and enrichment activities designed to be used with calculators in an elementary school setting are presented. Some possible difficulties students may encounter while carrying out the activities are reviewed. (MP)