The Melissa & Doug Old MacDonald's Farm Sound Puzzle plays Old MacDonald when the pieces are placed. Pegs help children two and older easily grasp and manipulate the eight charmingly illustrated pieces. The puzzle includes pictures of a farmer, cow, pig, horse, chickens, ducks, dog, and sheep that match pictures on the beautifully crafted wooden puzzle board. Old MacDonald starts the song, and animals complete their verses, for example, the pig sings, "And on that farm he had a pig, E-I-E-I-O". Directions and lyrics are included on the puzzle so kids can sing along! This puzzle helps teach hand-eye coordination and problem solving, and also helps develop auditory processing skills. It is an exceptional gift for kids ages 2 to 4 years. The product sensors are light activated.