This is not only a wooden tray puzzle, but it can also be used as a tool to help teach children how to tell time by looking at the hour and minute hands. The hands are interchangeable, focusing only on one at a time. The moveable pieces are double-sided, featuring the number on one side, and the word form of the number on the other (in both English and Spanish). All of the pieces are wooden and colorful, providing a long-lasting educational toy for years to come. The number pieces are approximately 1.75” x 1.75”, with the exact size varying from piece to piece. For ages 2 and up. Made from eco-friendly hardwoods.