I love this activity! It combines visual and audio learning with a hands on activity. It also pauses and asks discussion questions to allow critical thinking. It also answers a question that I do not think many people know the answer to. The activity can be done in a group, but it can also be done as an individual. The activity requires a printer, but I was able to do it without one. I just got some pieces of paper and drew a rough sketch of a mountain and river, and the activity worked just as well.