This colorful Melissa & Doug alphabet sound puzzle offers kids entertaining interaction while learning their ABC's. The puzzle sings the alphabet song and announces the letters when puzzle pieces are removed. Kids learn cause and effect while playing with this puzzle through the removal of the pieces and the puzzle's verbalization of each letter. The chunky wooden pieces are perfect for small hands. Eye-hand coordination is also learned through playing with puzzles, as is shape recogniition. There is an off-switch on the back of the puzzle and you can remove the AAA batteries required to make the puzzle sing and talk. Preschoolers 3+ will enjoy this puzzle.