Decimal squares materials includes squares in which each hundredth is again partitioned into 10 smaller sections. This permits modeling of thousands by shading in portions of the square. Fraction Circles are sets of colorful plastic circles divided into fractional parts which help students develop mental images of fractions. Geoboards are square or circular surfaces with an array of pegs over which students can stretch rubber bands to create polygons. These boards allow for a variety of mathematical investigations about area, perimeter, fractions, geometric properties and coordinate graphing.
Students are free to explore and can record their final solutions on dot paper.
Hundred Number Charts show all numbers 0 through 99 and help the student to see and recognize patterns in numbers. Mirrors are used along with other manipulatives to motivate students of all ages to experiment. They are ideal for exploring line symmetry and when taped together, facilitate investigating angle measurement. Their colors and shapes can be arranged into intricate patterns and used to develop geometrical and numerical concepts. Tangrams come in sets containing five triangles, one parallelogram and one square.