"Oh in the Woods . . ."

Trust me when I tell you that this song is amazing. Add motions and you're all set. I used it in elementary school, and the students enjoyed adding their own verses. It became the end-of-class song they could sing if they behaved. So when high school midterms rolled around, I thought the students might enjoy doing something silly and fun in the middle of studying and review sessions. So they stood around the room and sang "Oh in the Woods." Little did I know that it would become the official pre-exam song. When finals approached, they requested the song again, and it was the perfect way to spend the last class of the year.
Don't think that because students are older, they won't enjoy the simple things. Try it out, and it might make a huge difference in your class.