Following on from our strongest bridge building task with room 11 last week, your task is to build a bridge using materials of your choice from home. Your bridge must meet the following criteria:

• Must be able to span a width of 20cm (the desks will be pulled apart by 20cm and your bridge must be able to be used to cross over the gap)
• Needs to be able to support the weight of a can of beans
• Should have a deck wide enough to enable a toy car to travel across the bridge

Think about the design your group used in class and how you could improve on this. Triangles are often used in bridge designs due to their ability to absorb a heavy load better than a square or rectangle. Also consider bunching items together for added strength. Completed bridges should be carefully transported to school by Friday 8th Nov.

Good luck!