Includes 12 DC Motor DIY Kits. Simple science projects to help you learn about electricity, magnetism, and electric motors. Each kit contains everything you need to build a working DC motor and learn its parts from the inside out. A classic activity that has been used for years to teach important science and physics concepts. Wind your own armature and field coils. Assemble the rectifier with two snaps. Individual Kit SKU: PH1229.