This jumbo magnetic XY board is the perfect size to display graphing for the class to see. Dry-erase surface to work with dry-erase markers. Comes in 4 pieces that separate the quadrants so that one large XY board can be created, or specific quadrants can be used instead. Includes 1" (2.5cm) foam magnetic counters to mark positions on the board (90 counters in 3 colors). Each quadrant measures 15.55" x 15.55" (39.5 cm x 39.5 cm) to give a full XY board size of 31.1" x 31.1" (79 cm x 79 cm). Grades 6+