Children become familiar with a variety of geometric shapes as they match colorful pieces to picture pattern cards or create their own designs. Set includes 160 pieces in 6 shapes and 6 colors, and (8) 8.25" x 11.75" double-sided activity cards (16 patterns). Shapes include 3 triangles in 3 sizes, 2 quadrilaterals, and a circle. Largest shape, a triangle, measures 4" at the base. The smallest circle shape measures 1-3/8" .