This set includes 40 wristbands; 20 pairs of matching bands that show numbers in numeral and expanded form. The different types of numbers are displayed on different colored bands. There is also a gray scale version to save on color printing. If you have an odd number of students, wear one of the matches yourself. Pass out the bands randomly to each of your students. Wrap the bands around students’ wrists and then tape or staple the end together, so they are worn comfortably, and the text is facing the wearer. On “Go”, tell students to move around the room, looking for the student wearing the band that matches his or her own. Explain that once they have found their match, they should stand or sit together until the entire class is finished. Have students carefully slide off their bands, randomly redistribute them, and play again as time allows.