Bridge Builder
Design a bridge, then stress-test it under load and watch it hold — or crumble. Engineering, physics, and problem-solving in one.
Grades 4–10PhysicsEngineering
Students design a truss bridge, then put it under load and watch the physics play out — members stretch and compress, color-shift under stress, and fail if the design can't take it. It turns engineering iteration into a game: design, test, learn, redesign.
Built-in challenges, class leaderboards, and a teacher gradebook make it easy to run as a competition — strongest bridge, cheapest bridge that holds, best strength-to-weight ratio.
Demo video — design, load, and break a bridge (90 sec)
How a class uses it
- Run the Bridge Challenge: everyone gets the same span and budget, and the class leaderboard tracks whose design holds the most.
- Teach forces by watching them: tension and compression are color-coded live under load.
- Pair with a physical build — design and test digitally first, then build the winning design from craft sticks.
📚 Lesson ideas — coming soon
See it in action
Screenshot — a truss bridge under load with stress colors
Screenshot — the class leaderboard
Screenshot — a design failing mid-test
Standards connections
NGSSCommon CoreISTE
Detailed standards connections for Bridge Builder are in progress. Coming soon
Put Bridge Builder in front of your class
It takes about a minute to start — and it's free for teachers.