Create a stable bridge, as cheap as possible. - Drag to build beams - Click on the button on top right to simulate, click again to get back to the editor - Press the green flag to get to the level menu (your bridge will be saved) - Click on a node to select it - Drag from one node to another to select the beam between them - On the left you can change the materials by clicking on one of the 4 beams Keys: WASD: Pan T/ G : Zoom in/ out Arrows: Move a selected node to fine tune its position R: Delete a selected node or beam Q: Toggle "stress view" in simulation E: Fix/ unfix a selected node (in sandbox only) Some Solutions here (not the current records): https://scratch.mit.edu/discuss/topic/352657/