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This is a great, hands-on activity to really get your students thinking about integers. For this activity, I recommend students working in groups of 2-4. Each group will be given the 20 cards included in this file. The goal of the group will be to sort the cards based on if the statement on the card is true always, sometimes, or never. Some of these statements are a little harder and going to make your students think! I remind students beforehand that 0 is an integer, and not to forget about it when thinking about the statements. Included in this file are the 15 cards, a worksheet to give students, and an answer key. On the answer key I’ve given example math problems for each rule that I show students to help illustrate why something is or is not true. I’ve laminated my cards to use again and again, but you can also have students glue them onto the worksheet for a one-time use and for them to keep afterwards.