Have students work on their fact families using dominoes. There are 4 pages with blank dominoes (two pages with the equal sign at the end, and two pages with the equal sign at the beginning) and 3 pages with the domino dots already filled in. They pick a domino and fill in the numbers by counting the dots on each side. One side is one part of the math sentence, and the other side is the second part of the math sentence. Calculate and fill in the answer. It's easy and it can be fun too.