This is a great review that helps students to stay engaged while practicing ratios, proportions, and percents. Put students into groups of 3 or 4. Each group gets one student work sheet and one stack of relay race cards. Students start with card #1 and have to answer all four questions. Once the questions are answered, students bring their answer to the teacher to get answers checked. If answer is wrong, they have to work as a team to figure out the right answers. If the answer is correct, they draw the piece of the picture (says it on each relay race card) on the board or on another piece of paper, then start relay race card 2. The first team to finish drawing the picture (in this case, it would be the stick figure that is off to the left of each card) is the winner of the game!