These labels have been a HUGE time saver when prepping for my reading centers. I put the labels on plastic cups, and my 2nd graders LOVE our activity where they get to "keep" and stack the cup if they read the word correctly. They could also be used to place on index cards for flashcards, or anything else you can think of! Because they allow you to create a quick and easy resource, you can easily give each student their own set of differentiated sight words to practice at home. They are color coded (red=pre-primer, green=primer, blue=first, orange=second, black=third) for easy organization. Print on standard sized return address labels. Enjoy!