【 6 in 1 STEM Kits 】: These science kits contain a reptile robot, a balance car, a bubble machine, a fiber lamp and a buzzer wire game kit. Kids will be proud of building their own robot. REQUIRES (NOT INCLUDED): BUBBLE SOLUTION, AA BATTERIES. 【 Family Bonding Time 】: Doing scientific experiments together is a good way for parents and children to build a great family relationship. Complete science projects with your kids as their friend...