A Math Rummy card game, a stock market enrichment activity, and a puzzle in logical reasoning, all used with seventh and eighth graders, are described; directions for constructing a clock with suggestions for its use at the first grade level are given. (DT)

Patterns in modular arithmetic are discussed: (1) multiplication tables, and (2) diagrams obtained by joining points on the circumference of a circle. (MM)

A combination of readiness and body-part training was the most effective in producing number conservation with external objects. (Authors)

Suggested activities involving number patterns, using the idea of a number machine." (MM)

Notes on divisibility using manipulative materials, cyclic groups of functions, Horner's method of synthetic division, arc lengths of cycloids and cardioids, number squares, and students' concepts of mathematics. (MM)

The experiences described here use the idea of movement along the number line to reinforce the student's concept of addition and subtraction of both whole numbers and fractions. Four student worksheets and teacher guides are included. (MM)

The author describes an experiment to compare performance of grade 1-3 children on the various types of open sentence associated with basic number facts, and suggests some explanations for the results obtained. (MM)

The author examines a well known number trick, in other number bases, and finds that equivalent results arise. (CT)

The study of number bases, facilitated by programing a microcomputer, helps students make mathematics discoveries. Several programs are given and discussed. (MNS)

A procedure for generating the "nth" term of figurate numbers is given. (MNS)