An easily made device can be used for drill and practice on computational skills. The procedure, which involves use of the overhead projector, is described in detail. Teachers using it can vary content and the speed with which students should respond. (SD)

Ancient numeration systems form the basis for these worksheets. (SD)

Worksheets are provided for designing tessellation patterns from polygons. The activities are structured to develop skills in drawing congruent polygons on a rectangular grid. (JP)

Worksheets introducing the concept of loci as paths of points moving under specific conditions are presented. (DT)

Three worksheets are provided; the aim is to develop skill in visualization of the cube from two-dimensional patterns. (DT)

Worksheets on 3 x 3 magic squares are provided: one emphasizes recognition of results when a square is flipped or rotated; the other two give practice in computation with whole numbers, fractions, decimals, and integers. (DT)

Worksheets that give simple constructions for a family of parabolas, of ellipses, and of hyperbolas are provided. (DT)

Worksheets are provided to help students visualize, identify, and describe the solids generated by rotating polygons about axes in various positions, to relate these figures to cylinders and cones, and to compute their surface areas and volumes. (MNS)

The material is designed to help students build a cone model, visualize how its dimensions change as its shape changes, estimate maximum volume position, and develop problem-solving skills. Worksheets designed for duplication for classroom use are included. Part of the activity involves student analysis of a BASIC program. (MP)