These add and cover games are fun to play. My kids love them! I just started using the game boards with 3 dice for some of my students that are ready for a challenge. Students roll the dice, add the numbers, and cover that number on their mat with a manipulative. I found mini pineapple erasers at Target, check out their Dollar section. You can use any manipulative you have on hand but the pineapple erasers really made it fun.