I have seen a few of these pull-back racers pop up on Pinterest from time to time, from amazing bloggers like Frugal Fun 4 Boys and these various rubber band racers, but I thought we could take it one step further and make it more of an engineering activity.
Building the racer was likely the least exciting part of this activity! I gathered several different rubber bands. Try varying the size as well as the thickness. We used a tape measure and counted how many times we wound the rubber band to see which rubber band worked best!
Teachers are Terrific in today's What is going on in your science class linky!