Math meets the excitement of bingo in this skill-building game! The game focuses on using a doubles strategy—helping students master facts and build math fluency. Covers doubles from 0 + 0 to 10 + 10. Game comes with bingo markers, calling cards, a calling card reference mat and 36 game cards—everything you need for up to 36 players. Game cards measure 6 1⁄2" x 9".