Celebrate student birthdays and teach basic math and graphing concepts with this delightful confection of a bulletin board. Each child adds his or her birthday to the cake graph to create a mouth-watering classroom display. Each set includes 70 pieces • Our Birthdays banner (39" x 4.5") • 12 month birthday cakes (6" x 3.3") • 36 cake layers • 20 candles (.8" x 3.25") • Flag number line • Teaching guide