These are flashcards that have been extremely successful in my classroom. Each word has three cards, the word, a definition, and a picture to represent the word. All of the the cards are linked through qr codes. In my classroom I usually print 3-5 sets, cut out the cards and laminate them. I have vocabulary sorting parties in my classes. I see which classes can work together to get the most complete sets. There are many other ways they can be used.