Activity & Learning Toys

JISADER DIY Smart Solar Tracking Device Science Toy Stem Toys for Homeschool Teens Intelligent Light Tracking: This DIY solar tracking device uses four light-sensitive modules to detect the intensity of light and calculate the position of the light source DIY Assembly Kit: Delivered as a set of components requiring assembly, this... JISADER DIY Smart Solar Tracking Device Science Toy Stem Toys for Homeschool Teens