• Drop a colorful rock into the top of this cheerful dump truck construction toy and watch it tumble into the bucket to explore numbers • Once the rocks are in the bucket, toddlers can push or pull the truck along to see the rocks rumble inside • Develop motor skills by lifting the hinged bucket to unload the rocks and start again • Includes three colorful buttons that play melodies, phrases and teach tools and colors • Intended for ages 6-36 months; requires 2 AAA batteries; batteries included for demo purposes only; new batteries recommended for regular use