How to Make an Axle for a Balloon Car

Don't just teach your students about Newton's laws of motion using diagrams in a textbook—try something hands-on! In this project, students will build their own cars using craft materials and explore the relationship between force, mass, and acceleration. Students can graph data and make observations in real-time using a mobile phone and a sensor app or use a low-tech approach with a meter stick and stopwatch. Read more