Once all the puzzles are completed, I tell my kids to mess up one shape at a time. I also usually have them say the name of the shape out loud as they are messing it up. This gives them some extra practice at saying the shape name. I am only teaching Smiley Man the four basic shapes (circle, square, triangle, and rectangle). Whenever I do shape activities with him, I only use those four shapes. He is the perfect age to learn 4 shapes so that is what we work on.