According to Britannica, a "bridge is a structure that allows people and vehicles to cross over an open space. Bridges span, or stretch across, deep pits in the earth, bodies of water, and roads. The primary function of a bridge is to carry traffic loads: heavy trucks, cars, and trains." 1. Watch "What Makes Bridges So Strong" by SciShow Kids. 2. Work with your group to design a strong K'NEX bridge. Your bridge must be able to hold rocks. 3. Build your bridge. As you build, you are allowed to test the strength of your bridge with ONE rock. You will have 40 minutes to design and build your bridge. 4. Once your bridge is built, take a picture . 5. As your bridge is tested, take a picture of one rock (load) on your bridge. 6. Once your bridge breaks, take a picture . 6. Count the number of rocks that your bridge held. 7. Use Shadow Puppet to create a video about your bridge using your 3 pictures. Explain your bridge. 8. Add your video to Seesaw.
What Makes Bridges So Strong: https://www.youtube.com/watch?v=oVOnRPefcno