Features: 1.Children can improve their hands-on ability through assembly and disassembly, 2.Can stimulate children's interest in learning and curiosity 3.Not only small toys, the fun function can make children happy 4.Great educational toys, can develop children's hands-on talents 5.Can guide children to like science and help children understand abstract knowledge specification:Item Type: Assembled Educational Model Toy Material: ABS plastic Power: AA x 2(not included) Science and Education Toy Type: Physics Capacity Building: Hands-On Ability, Brain Applicable Age: Adolescence(7-14 years old) PackageList:1 x Baseplate3 x Big Wheel8 x Corner1 x Turntable1 x Plug8 x Building Blocks1 x Battery Box1 x Motor1 x Stand3 x Belt3 x Shaft1 x Rod1 x Screwdriver1 x Parts Package