This a very fun and engaging activity perfect for kids of any age. With the use of very accessible, everyday household items, this activity can easily become a creative, long-term STEM project. The site provides an interesting introductory video and give clear instructions on how to build a simple car using the balloon. Of course, you don’t have to use the materials the site lists; the wheels, axel, and body of the car can be made from whatever you can find. The background science info given from this resource is fairly minimal and would do better to add extensions or additional resources to extend the activity beyond its current exploration.