ETA hand2mind Linking Snap Cubes, Math Manipulative (Set of 100) Easy-to-manipulate cubes connect on all six sides Perfect for sorting, classifying, patterning, counting, basic arithmetic operations, and problem-solving activities Cubes come in 10 colors: red, white, green, blue, yellow, tan, brown, black, light green, and pink Cubes measure 3/4" Grades K-6