Worksheets and instructions are provided for a lesson on tessellations made with regular polygons. Patterns for equilateral triangles, squares, regular pentagons, and regular hexagons, each having sides one inch long, are included. (DT)

Definitions and examples are given for the concepts of neighborhood, exterior, interior, and boundary points, closed and open regions, and boundedness of point sets. (DT)

A description of the Shropshire Mathematics Experiment, discussing the philosophy, goals, content, and implementation of a program in modern mathematics for the secondary school level. (DT)

Twenty suggestions for lending variety to classroom activities. (MM)

A selection of definitions and word problems found in an 1824 algebra textbook. (DT)

A method of demonstrating computer programming and computer capability by using students to execute the commands of a computer program is explained. Serveral programs are specified and suggestions for 12 programs covering other topics are made. (DT)

A description of mathematical curriculum development within Tanzania from 1961-1971. (MM)

Patterns for a set of Napiers Bones and for a denominate number slide rule are provided, with instructions on how to use each of the calculating instruments. (DT)

Two studies, Teaching Emphases in Primary Mathematics and A Comparison of Three Methods of Teaching Fractions to Older Slow-learners, are critiqued. (DT)