Shape sorting with a twist! There are ten unique shapes and four slots. Can you figure out how to fit ALL the shapes through the slots? Here's how it works: with a push of the button, the top twists and the slots all change. Kids have to explore and experiment to solve the puzzle and match all the shapes! Then, open the door to release the blocks and start the fun all over again. Classic shape-matching fun gets a boost of brain-strengthening excitement with this innovative toy. Includes Shape Factory and 10 chunky, uniquely shaped blocks. Blocks measure approximately 1-1/2". For ages 2 and up.