Versatile two-sided Apple/Book Calendar Cover-Ups feature an apple with bright patterned background on one side and colorful book illustration on the other side. Each pack comes with 36 cards—33 numbered, two-sided cards, and 3 bonus blank cards—with coordinating designs on both sides. These 3" x 2.5" cards will fit any standard classroom calendar. These sturdy cards can also be used for sorting activities, game pieces, creating number lines, math lessons, and so much more! Many designs and colors to choose from to fit any classroom theme.