Rubber Band Cars

consider this

For this challenge, you will build your own rubber band car. Rubber bands are stretchy, so you can "wind up" your car, and use the energy contained in the stretched rubber band to make your car go forwards. There are lots of ways to take advantage of rubber bands to move an object further! See instructions and video tutorial below to see one idea of how to build the car. What could you make your car out of? What can you modify, change, or add to make your car travel the farthest.

key terms

stretch: (verb) cause (something) to become longer or wider by pulling it

elasticity: (noun) ability of a material to return to its original shape after it has been stretched

energy: (noun) capacity to do work

engineering: (noun) process of creating and building structures, products, and systems by using math and science


design a solution

generate an idea

Follow the instructions in the videos or search for another tutorial to make your own car. Your car must be powered by a rubber band and no other source of energy. Think about what changes or modifications you can make to your car to make it travel further. What do you available you could use to make your car? Recyclable materials, K’NEX, LEGOS?

design and build a prototype

What works? What doesn’t work? What modifications could you make to make your car go further? Keep testing as you are building to make sure the changes you are making are helping, not hurting.

share your idea

Film a short (Max 2 min video) pitch of your invention. Include details like who is it for, what problem does it solve, etc. Have fun! Upload/share your video to twitter, facebook or Instagram. Don't forget to tag us!

example solutions

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