Meets Connecticut Science Standards

  • 4.1 The position and motion of objects can be changed by pushing or pulling.

For Families


Students construct cars powered by rubber bands and measure their performance after 20 minutes of practice. Lively insights into the mechanics, measurement and math of motion. Great for a followup program on creative elaboration. New design now employs wheels of diameter 1/π.

Parts



Step 1
Screw the screweyes into the guide holes, and push the short pins through the end holes.



Step 2
Push the axles though the wheels' centers, then thread through the eyes and attach the opposite wheels.



Step 3
Create the drive train by tying two rubber bands together and pulling tight.





Step 4
Wrap the drive band below one axle and pull tight through itself. Wrap the band over the top to the opposite side of the peg.