Choose from 6 different types of Pattern Blocks: Wood 1cm, Plastic 1cm and .5cm, QuietShape 1cm and .5cm, and Hollow 1cm. Use these sets of 250 blocks, in six shapes and six colors, (contains 25 yellow hexagons, 25 orange squares, 50 green triangles, 50 red trapezoids, 50 blue parallelograms and 50 tan rhombi) to explore patterns, symmetry, linear and area measurement, fractions, and problem solving. The 1cm blocks are thick enough to stand up for 3-dimensional patterning. Each set of 250 is packed in a plastic bucket.