Great Test or Quiz Review.
Purchase the individual snack pack sized Skittles for each member of your class (or get large bags and scoop into dixie cups for each student). Have students pull out a blank piece of paper to show all work. Project the last slide in this PowerPoint onto the screen and have students work out one problem for each Skittle they received. One red Skittle = one red problem.
Three yellow Skittles = three yellow problems.