" Children will explore patterns, symmetry, linear and area measurement, fractions and problem solving with these colorful blocks. These colorful pattern blocks are crafted with no sharp edges or corners and can be used for multiple learning experiences providing hours of imaginative play. Details:Set of 250 include 25 yellow hexagons, 25 orange squares, 50 green triangles, 50 red trapezoids, 50 blue parallelograms and 50 tan rhombuses packaged in a plastic storage bucket.Lid has built in handle."