Among the most versatile of math manipulatives, Pattern Blocks can be used with children from kindergarten through middle school. The only limit on their use is your imagination. Patterns, geometry, spatial relations, area, perimeter, volume, networks and a host of other applications will be found for these necessities. Our range includes a choice of three materials; foam, plastic or wood and two thicknesses. Each set contains 250 blocks in six shapes and colors.