IQ-KEY Perfect 600 -Educational Assembly Toy Kits LEARN PROBLEM-SOLVING AND HOW IT APPLIES - IQ KEY is an educational toy which assemble the capsule and block of carious functions. Design, build, and refine 20 different machines using the same 84 included parts.Perfect 600 includes 84 pieces and over 20 different shapes seen in daily life can be made DISCOVER MECHANICAL ENGINEERING - Battery and wire switch operation with assembly of the gear capsule and block. Observe energy demonstrations, learn about energy conversion, circuits and using machines and energy for problem solving. LEARN SCIENCE & ENGINEERING - Children can learn the principles of science while paying IQ KEY. Encourage students to design and build machines. A UNIQUE TOY FOR ALL AGES - Different from the play-oriented assembly toys. Control your machine wirelessly with included controller and receiver. S.T.E.M FOCUSED  This kit combines science, technology, engineering and mathematics (STEM) as well as Common Core and National Next Generation Science Standards.