Customize the content of this bingo set to reinforce lessons through game play. Use to review weekly vocabulary, math facts, science concepts and more. Versatile set allows you to differentiate instruction by creating customized games at any level. Features everything needed for the whole class to play at the same time, either in centers or all together, including 30 blank, write-on/wipe-off bingo game cards, one blank, write-on/wipe-off spinner and 800 game markers. Use with dry-erase markers, not included. Cards measure 7"L x 8 1/2" H.