Ok, so my professor is making our group teach the whole class about a chapter from the book. Theres 3 of us in the group. We need to give a present the material & have a class activity for people in our class to suck in the chapter's materials better. Our chapter is about Supporting your Ideas, this girl and I are taking turn lecturing about the chapters with examples & pictures/graphs, while another girl write on the board the chapters info.

I need a good group activity to reach out to my class. Can you guys give me some ideas? What would be a good group activity that explain this material.