Describe a set of data using mean, median, model, and range game. I made copies on bright colored card stock. Each group of students were busy working to solve the mystery data number. I allowed students to use white boards and markers to solve the mystery data numbers. I did this as a whole class group work as I walked around the room to get everyone 'started'. Next, I worked with with my small group as the rest of the class worked on this with no problems. You and your middle school math class will enjoy.