[ EDUCATIONAL EXPLORATION KIT]This DIY educational science kit is specially designed for 8-12 year olds. simple circuit physics knowledge, help to understand the basic physical of circuit diagrams and transmission, let children do it by themselves, stimulate and creativity, and experience the charm of science.[ completion or team cooperation]The stem toys manual contains complete product introduction, safety warning, operation specification, game introduction, installation graphic steps, and the important scientific knowledge and principle description. We have made the perfect preparation for everything. Children can complete it independently, cultivate a tough character, and also work in a team to let them understand the importance of team cooperation.[Move your hand and discover science]What is a series circuit? What is the principle of work? How to match the combination of acive wheels, driven wheels and idler wheels? Go ahead, little scientist [STEM circuit and mechinery science kit]The STEM toys provides 66 precision parts and a detailed product manual allows children to combine circuits and gears with their hands to create amazing mechanical structures and circuit combinations.(AA batteries not included)[Diy rotating science kit]Through simple connection and part building block installation,children's hands-on ability and logical ability are exercised,and scientific principles are explored.The rotating is composed of 66 parts,of which 6 are rotating targets,which test children's hand-eye coordination ability and feel the of rotation .Type: Ccolor:As shownMaterial:plasticPackage Contents:1 x science kitsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.