Personalized Math Teachers Rock White Text Women's V-Neck T-Shirt. Math teacher's rock in white text with a happy rock holding the numbers one, two and three, is a funny academic gift design for your favorite school teacher at back to school, birthdays and holidays. 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit