Harness the power of the wind - on land - and there'll be smooth sailing ahead for this incredible STEM | STEAM activity kit! Students are empowered to quickly experiment with ease, testing and re-adjusting their sail’s shape, angle and pitch. Watch as they work through the engineering & design process, designing their sail cars for speed, distance or even to ferry school supplies across the room! Change wind conditions to increase the challenge! For higher grade levels, there are optional labs on inertia, Newton’s Laws, and energy. The Advanced Sail Car features extra components for innovation and tinkering! For lower grade levels, a TeacherGeek tool kit is required for the initial build (but car bodies can be reused each year without tool use). Tool kits are recommended for student use in higher grades. Documents available for grades K-2, 3-5, 6-8, 7-12.