nerdi
Bridge Builders
Drag road, wood, steel and cable between the joints to span the gap, then press Go and watch a cart, car, truck, bus or train drive across. Every piece glows green, yellow or red to show how hard it is working, with arrows for pull and push, and if something snaps the game shows which piece broke first and gives a hint. Sixteen bridges in four worlds grow from one prop to trusses, arches and cable towers on a budget, plus a free-build sandbox.
ages 8–12 · about 30 min · free to play
What you'll learn
- Why triangles stay rigid and squares fold
- How a load flows through beams to the supports
- Pull and push: tension and compression
- Choosing materials and staying within a budget
- Designing, testing and improving