Description: 【Educational DIY Kit】: 3D Wood Puzzle Assembly is designed to help children understand and master scientific knowledge. Glasses for understanding and cultivating children's exploration and cognitive abilities. 【Hands experience】: Through manual assembly and make of STEM Science Kits, children can experience the charm and fun of science hand and enhance their hands on ability. 【Material】: Science Education Toy is made of wooden material, which is sturdy and not easily damaged, ensuring long term use. 【Ideal Gift】: Physics Kits Toy is an ideal gift for children, allowing them to discover new fun in learning through hands on gaming experience and promoting their brain development. 【Use】: Wooden Craft Glasses can be used as teaching models, science competitions, scientific experiment models, educational assembly toys, etc. Suitable for children and teenagers to play. Specification: Material:Wooden Size Chart: 11cmx8cm/4.33inchx3.15inch Package Includes: 1 Science Education Toy Kits(4 Pack) Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.