Through Pattern Blocks kids develop an understanding of: geometry (shape, symmetry, tessellation, angles), measurement (perimeter and area), and algebra (pattern, and number-fraction). Transparent Pattern Blocks are ideal for use on a light panel to explore attributes and color mixing. Use the included activity guide for ideas on how to build early math skills with pattern blocks. Pieces feature raised edges, making them easy to pick up. Each set includes 120 transparent, plastic pieces in 6 pattern block shapes and colors, conveniently packaged in a storage jar with lid and carry handle.