A fine crafted wooden puzzle offers a hand on introduction to number 1 to 10. Children learn through play as they fit the brightly colored wooden knob pieces in the cavities of the board.These knobs also make the puzzle ideal for children with impaired motor skills. Inset Tray Puzzles from Little Genius Toys Pvt. Ltd. are Unique: Each puzzle has a built-in tray which provides a stable base while the child is playing and also serves as a container preventing scattering and the loss of pieces when not in use. Durable: Made from MDF by a special process. The pieces can be wiped or cleaned with a piece of moist cloth. Naughty fingers cannot peel or scratch the pieces.