STEM Challenge: Make a car that rolls using a balloon to propel it! This challenge has several parts. Kids must make the body of the car and the wheels. Attaching an axle is another part and making wheels that will roll! The most fun is making the balloon work correctly!
Science Demo Guy on TpT—really great STEM / STEAM resource!! Activity Challenge 16 Pack: Middle School, 6th-8th grade. Perfect for meeting NGSS standards! Each activity includes a teacher instruction video that clearly explains how to set everything up and the science behind it.