If you are teaching 5th graders a history lesson about interdependence, you can use this nice video on this website. This video is quick and easy to follow and it explains a little bit about what interdependence is. It first starts off explaining how when you wake up in the morning you depend on things like soap, toothpaste, and a toothbrush to get ready. It then says how the stores also depend on us to buy those things. The video then goes on to explain how other countries depend on each other for goods as well.