Pattern Block Classroom Set Foam Use this set of 250 blocks , in six shapes and six color, to explore patterns , symmetry, linear and area measurement, fractions and problem solving , These pattern block consist of 25 hexagons, 25 square, 50 equilateral triangles, 50 trapezoids, 50 rhombuses, and 50 rhombuses. Children will enjoy discovering and developing a positive dimension to learning with these manipulative.