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Makeblock mBot Robot Kit with Dongle, STEM Projects for Kids Ages 8-12 Learn to Code with Scratch Arduino, Robot Kit for Kids, STEM Toys, Computer Programming for Beginners Gift for Kids Ages 8+EUDAX 6 set Rectangular Mini Electric 1.5-3V 24000RPM DC Motor with 84 Pcs Plastic Gears,Electronic wire, 2 x AA Battery Holder ,Boat Rocker Switch,Shaft Propeller for DIY Science Projects