Features: STEM Toys Set:Our science kits for kids age 8-12 are handmade material kits for multiple toy models.We adhere to the concept of science, technology, engineering and math,so that children can experience the fun of DIY in the process of independently assembling each model toy, cultivating scientific interest,learning scientific knowledge, exercising children’s thinking ability and innovation.It’s worth choosing. Multi-type & Multi-scene:The STEM science experiment kits have a variety of different types and styles to choose from, including models of transportation such as ships, airplanes, cars, etc., as well as STEM recreational building toys such as windmill houses, ferris wheels, carousels, etc., and gears, scales, cranes to understand the knowledge of physics and different models of dinosaurs, to satisfy the child’s needs for a wide range of interests.Both boys and girls will like.They can be used for many occasions. Safe Material Composition:These 3D wooden puzzles for kids are made of high quality natural wood as the main body of the model,which is green and environmentally friendly,safe and reliable,with high quality electronic parts,which are stable and reliable,as well as high quality plastic accessories,which are safe and environmentally friendly,odorless,which is the best learning toy kit for children. Detailed Instructions:Our toy kits come with high-definition complete color printing instructions and instructional video,easy for children to assemble the components independently according to the instructions and provide children with detailed knowledge explanation. Usage: These sets of STEM toys can be used as educational 3D cartoon puzzles for science and technology lessons, teaching children about science and physics while exercising their hands-on skills and creativity in the building process. Dinosaur modeling sets are popular with boys and provide lots of fun while learning about dinosaur history. STEM building toys for 8-12 years old boys can be used as novel and unique crafts to decorate the room, the star lights can be used for illumination, very practical.These toys can also be used as a beautiful gift for classmates and friends after assembling. Product Specifications: Material:Wooden Color:Original wood color, as shown in the picture Size:Approximately 8*6*2 inches Includes: The STEM toys set includes four different wooden puzzle model toy material kits,which are hand crank crane, balance scale, conveyor belt and gear drive model. Each model measures approximately 8*6*2 inches. Note: Manual measurement,please allow a slight error in size. There may be slight differences in color due to different screen displays.