Following background information on Rubik's Cube, a bibliography of print materials and computer software useful in using the cube in mathematics and science instruction is presented. (MNS)

Three pieces of computer software are described and reviewed: HyperCard, to build and use varied applications; Iggy's Gnees, for problem solving with shapes in grades kindergarten-two; and Algebra Shop, for practicing skills and problem solving. (MNS)

Formulas for use in computer programs are presented. Two programming applications are discussed: one to ballistics using inverse sine and one to hours of daylight using inverse cosine. (MNS)

Presents a method for using matrix algebra and computers to encode and decode secret messages. Provides examples of coding procedures, a short review of matrix multiplication, and a BASIC program for use with secret messages containing up to 1000 numbers. (RT)

Examined is the effectiveness of a computer software package designed to be consistent with a fraction strip chart model. The materials are described; they were used with three fourth-grade classes, while two other classes acted as controls. (MNS)

Investigated was a sequence of computer-based activities on estimation with 108 students in grades 9, 10, and 12. The activities were appropriate for students at each grade level; each class improved their estimation scores significantly. (MNS)

This study investigated the effects of combining interactive microcomputer simulations and concrete activities on the development of abstract thinking in elementary school mathematics. Students in grades 2-4 were assessed on tasks involving designs and patterns. (MNS)

Describes several phenomena in which interesting properties of numbers are demonstrated. Includes discussions of amicable, perfect, and sociable numbers. Presents computer programs for conducting a number chain search. (RT)