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STEM Projects Toys, 6-in-1 Solar Robot Science Kits for Kids Age 8-12 Year Old, DIY Educational Building Experiments Boys Girls Christmas Birthday Gifts Acetaminophen The size of this apronThe solar robot kit can be assembled into six different working models including a space station, explorer, space rover, astronaut, shuttle and robot dog. What's more interesting is that six small robots can make a big space mech. Children can explore and study how to build robot model kits that use solar energy through assembling games and learn about renewable energy and other knowledge when play them. These stem toys can move either in the sun by