I print these using the Labels template 15163 (Shipping Label) in Microsoft Word (for a 2" by 4" label). I then stuck the labels on the front of 4x6 index cards (writing the answer on the back). They can then be used for group or pairs quizzing. Our favorite activity is "Quiz-Quiz-Trade" - each student has one card and they face another student with a card. "Quiz" - one student names the card held by the other student; "Quiz" - the other student names the card held by the first student; "Trade" - students trade cards, then go find another partner and repeat.