DIY Automatic Serve Machine Steam Science Education Toy Kinetic Energy Transfer Experimental Pole Educational Prop

Children's Scientific Educational Toys DIY Automatic Ball Machine Kinetic Energy Transmission Experiment Stem Education Props Features: Log wood color, you can use your imagination, graffiti freely, create a toy of your own. Exercise children's hands-on ability, let them understand simple knowledge about Mechanical conversion. Warm Tips: 1. When assembling the product that requires the circuit, pay attention to the fact that the red wire is connected to the positive terminal of the battery case; the blue wire is connected to the negative terminal of the battery case. 2. All products is NOT including battery, the accessories are random in color, color is NOT specified, please read it carefully before purchasing. 3. Contains small accessories and sharp objects, children must be accompanied by an adult, please take care of children to avoid swallowing.