Personalized Math Student Dinosaur School Teacher Toddler Long Sleeve T-Shirt. math themed school dinosaur for little boy has say yes to math slogan A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.