[ EDUCATIONAL EXPLORATION KIT]This DIY educational science kit is specially designed for 8-12 year olds. simple circuit physics , help to understand the basic of circuit diagrams and gear 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 most important scientific and principle . We have made the most perfect preparation for everything. Children can complete it independently, cultivate a tough character, and also work in a team to let understand the importance of team cooperation.[Move your hand and ]What is a series circuit? What is the principle of gear work? How to match the combination of acive wheels, wheels and idler wheels? Go ahead, little [STEM circuit and mechinery science kit]The STEM toys provides 66 precision parts and a detailed product manual that allows children to combine circuits and gears with their hands to create mechanical structures and circuit combinations.(AA batteries not included)[Diy rotating science kit]Through simple connection and part block installation,children's hands-on and logical 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 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. [WY] Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store