This is 32 slide powerpoint that is made into a game of "Trashball," where students get into teams to answer questions. After the questions have all been answered, students get an opportunity to take their teams points and shoot recycled paper into a trashcan, or even a basket hanging from the board. Feel free to make changes that fit your classroom needs. We used this right before a big test and the students really got into it. Answer key is included!