Help your little one learn classic nursery rhymes while working on their motor skills with this cute sound puzzle. Nursery rhymes play when the corresponding puzzle piece is lifted from the puzzle board. Includes Humpty Dumpty, Baa Baa Black Sheep, Hey Diddle Diddle, Mary Had a Little Lamb, Twinkle Twinkle Little Star and Jack and Jill. Wood. (6 pcs. per puzzle; 1 puzzle per set) 11 3/4" x 8 3/4" Requires 2 “AAA” batteries, not included. © Melissa & Doug, LLC. All Rights Reserved.