5 Set STEM Kits, Wooden Building Kits, Assembly 3D Puzzles, Science

🧿A great gift for kids: This STEM kit comes with all of the parts you need to build 5 STEM toys, elevator, telegraph,newtons cradle, hydraulic excavator, sun earth moon model. Ideal gift for 8, 9 ,10, 11, 12 year old boys and girls.🧿High quality: These STEM projects are made of safe, pollutant-free wood with precise laser pre-cut , the edges of each component have a smooth finish can be tightly integrated, easy to assemble. All parts are made of high-quality safe and recyclable materials.🧿Unique design: The science building toys can be painted and decorated to make them unique, and the finished product are very suitable for display on a table, shelf or showcase in a children's bedroom, playroom or study area.🧿Stimulate children’s interest and curiosity: With various 3D wooden puzzles, gears, plates, tires ,shaft and screws for children to DIY 5 different styles of model! Kids will be excited and proud of their own model that actually moves.🧿Cultivate creativity and imagination: By assembling this wooden building kit, children can develop their hand - eye coordination, stimulate imagination and promote their physical and intellectual development.