Kids build early STEM skills such as problem solving, critical thinking, and perseverance when they construct their own creation of spinning gears. This 83-piece set includes four friendly pets, two Ferris wheel carriages, a teacup, an airplane, and more. Compatible with all Gears! Gears! Gears! sets. Make endless combinations and designs with this 83-piece set Kids get hands-on cause and effect learning by turning the crank and watching their wonderland spin Set includes four friendly pets, two Ferris wheel carriages, a teacup, an airplane, and more Kids build early STEM skills such as problem solving, critical thinking, and perseverance Compatible with all Gears! Gears! Gears! sets. Ages 4+