12 pieces puzzle with knobs for easy gripping. Each finger is numbered. Lift the pieces and count the dots underneath. While the children are engrossed in fixing together pieces of the attractive jigsaw puzzle, they do not realize that the puzzle is secretly contributing to their mental growth. It helps to build their imagination and sharpness their power of observation. It also exercises their memory, improves finger coordination and helps them to sort out differences in shapes, sizes, and colors.