This is a case of supplies to make 280 propeller cars. Kits are packaged with 10 sets of supplies per color-printed box (28 boxes per case)
Experiment - Adjust the angle of the wheels or the propeller to change how the car drives
STEM Learning - The rubber band propeller car offers kids and students a fun opportunity to learn about science and engineering concepts like propulsion, inertia, potential & kinetic energy, and more!
Clear and colorful instructions - Comes with full color photo step-by-step instructions and a hot glue safety tips sheet 
Make it your own - Add your own additional rubber bands or other materials to improve and customize your car 
This kit was created by professional hands-on educators. Designed for classrooms, after school enrichment, summer camps, libraries, and hero parents who value DIY STEM education!