These brightly colored 2cm plastic blocks in 10 colors connect on all sides. They stimulate participation in sorting, classifying, patterning, counting, basic operations and problem solving activities. They can be used over and over for hours of fun. Snap Blocks can be used in several areas such as learning colors, learning to count, patterning, and much more.Details:Multicolored2 cm each100 blocksConnects on all sides