Detailed instruction and worksheets are given for an activity designed to develop and improve geometric perception through the use of polyhedron models. (MP)

The purpose of this study was to identify which of 36 mathematical competencies were deemed desirable or mandatory by hiring officials in selected businesses. (MP)

A method is presented for determining cube roots on a calculator with square root facility that has a rapid rate of convergence. (MP)

The calculator is used to help students discover the Rule of 72 which is, in turn, used to investigate problems involving population, inflation, and energy reserves. (MP)

A discussion is given on the probability of winning at the game of craps. Variations are discussed in terms of probabilities. (MP)

An investigation using the Pythagorean theorem, the area of a triangle, and some first-year algebra yields a relationship between the radii of inscribed and escribed circles. (MP)

This discussion of ways to use spirolaterals in the classroom includes making conjectures, hypotheses testing, and proofs, as well as a number of examples. (MP)

Some classroom discoveries are reported concerning artistic patterns related to Pascal's triangle that can be generated by the computer. (MP)

Some reflections by a teacher include personal satisfaction, relevance of mathematics, reasons for teaching, and the unique contributions of mathematics. (MP)

An example is given of a class of problems whose solutions require the use of a scientific calculator in order to plot the graphs. (MP)

Classroom related topics discussed are: cryptics and statistics; understanding absolute value; recognizing quadratic equations with no real roots; and two derivations of a formula for finding the distance from a point to a line. (MP)

Instructions are given for the use of worksheets whose objectives are to challenge and develop spatial visualization through the mental folding, rotating, and intersecting of cubes. (MP)

A proof is given of a construction axiom, involving the use of a Mira used to construct a segment of a length cube root of K when segments of lengths 1 and k are given. (MP)

This discussion of cyclic patterns that appear in repeating decimals includes the use of the calculator in discovering the patterns. (MP)

A systematic search is given for products where reversing the digits does not change the answer. Related questions are suggested that can be solved by the same discovery approach. (MP)