Kids would love to build their own robot car kit. 5 SETS STEM KIT: These science kits contain a solar powered car, a wind powered car, an obstacle avoidance robot, a transmission tank and a glider. REQUIRES (NOT INCLUDED): AA BATTERIES FAMILY STEM ACTIVITIES: This set of science experiments is a good way for parents and children to complete together, can also be used as a classroom STEM project UNIQUE GIFT IDEA: Our engineering kits designed for kids age 8-12 are cool stuff for a budding inventor, very suitable for elementary students to show their talents in a science fair.