Learning to use doubles to add can be a real challenge. This game helps students practice the skill with a partner. Copy the doubles +1 card on card stock. Cut apart. Partners will place the cards on the box on their paper and turn the top card over. One partner will use cubes to show a doubles fact that could be used to solve the problem. The students record both addition sentences on their papers and continue with the next card. Cards can be laminated for better durability.