Drag between dots to lay a beam. Brace the deck with deep triangles to the anchors. Stay under budget, then Test.
Learnaroo Arcade · KS3–GCSE Physics & Maths
Bridge Forge
Engineer a bridge that holds a heavy lorry across 12 ever-harder canyons. Beams only span one cell, so you must triangulate densely and build deep trusses — all within a tight budget. Run the live physics test and watch the forces: blue in compression, red in tension, snapping if overloaded.
Each beam carries either tension (pulled) or compression (squashed). A single straight deck sags and snaps — deep triangulated trusses share the load. Deeper canyons and heavier lorries need bigger, cleverer structures, and later budgets are tight, so design efficiently.