Growth functions involved in mathematical models for biological development are discussed using the algebra of polynomials and matrices. (SD)

A computer program developed by a high school student approximates the value of "e" by computing partial sums of the defining series. (SD)

Identifying the larger (L), smaller (S) and difference (D) of two real numbers, and then selecting the appropriate relationship between L, D, and S can help students solve algebra word problems. (SD)

Results of operations on the Pythagorean formula are interpreted pictorially to yield interesting art forms. (MP)

A coordinate system is imposed on a geoboard to form a table that leads to the discovery of the formula n[(n+1)(n+1)] (n+2)/12. Proof is by induction. (MP)

The operation of rounding is shown to lead into an investigation of an abstract mathematical system. Properties of the system are discussed and graphs of the rounding function are drawn. Some questions for discussion are given. (MP)

The author attempts to provide in compact form information to correct problems related to "frieze groups" and "wall paper groups" and, in addition, provide useful visual references for readers of the literature on the plane symmetry groups. (MN)

A method for converting a three-dimensional coordinate system to a two-dimensional coordinate system is explained. (MN)

This paper illustrates an approach to the study of dinosaurs through the algebra of sets. Initially, Venn diagrams provide answers to questions, but gradually the diagrams become more involved until answers are sought by means of the algebra of sets. (MN)

A different method for solving quadratic equations and inequalities is proposed. The method is applicable to solving quadratics over the set of real numbers as well as the complex field. (JT)

The topics discussed are, "Helping Students Understand the Distributive Property,""Converting from Base 10: Nonintegral Bases?,""Rapid Mental Squaring of Mixed Numbers," and "Some Nonstandard Binary Operations and their Properties." (JT)

A question as to the number of stitches needed for a particular triangular crocheted scarf gives rise to the use of several methods of solution including arithmetic series. (MN)

Formulas are developed which answer installment-buying questions without the use of amortization, sinking funds, or annuity tables. Applications for geometric progressions, proof by induction, solution of exponential equations, and the notion of recursive functions are displayed. (MN)

A class of triangles related to the Pythagorean triangles is described; theorems concerning this class are proved. (SD)

Computer algebra systems are described. Features of such systems and information on MACSYMA, Maple, muMath, REDUCE, and SMP are given. (MNS)