Personalized Math Rocks Women's Plus Size V-Neck. Math rocks with three happy rocks dancing with numbers is a humorous design for mathematicians, students and teachers at birthdays, holidays, back to school and graduation. So comfortable you'll want one in every color! These versatile v-neck t-shirts are great to wear to the office or at a weekend BBQ with friends. Available in a wide range of colors to compliment any wardrobe, these shirts are softly shaped to complement a plus sized woman's curves.