2010+Trip+Trap,+Trip+Trap,+who+is+crossing+my+bridge?+Part+3

So how strong can we make this bridge? Question: What can be stronger than a flat piece of paper? //Answer:// Concertina folded paper (triangles make it stronger!) //Don't forget to turn up the volume!// media type="file" key="How strong is my bridge_-Mobile.m4v" width="604" height="604" align="center"