These knobbed puzzles are durable, beautifully crafted, and realistically colored. Pairing the puzzles with corresponding Parts of the Animal Cards (RC25) makes an attractive, complete exercise to enhance your zoology curriculum. Made of laminated hardwood with hand-screened images; puzzles are 9¾" x 7⅜". Made in U.S.A. From Early School Materials Company. Ages 3 and up.