Food is a good teacher. That’s what children’s book author, Ann McCallum, believes. The high school teacher, who started her career in an elementary school, says food can teach little kids about basic, abstract concepts, plus, it's fun to work with. McCallum created a series of books on that topic, called Eat Your Homework. As Faiza Elmasry tells us, she also visits schools, using food to give students a different taste of math and science.