How many servings?
Demetrius and BJ are arguing about the answer they got when posed with the following question:
One serving of Sweetened Tasty Crisp cereal is ¾ cup. I ate 1 ¼ cups of Sweetened Tasty Crisp for breakfast. How many servings did I eat?
BJ claims that there are almost 2 servings, but point out that they are short ¼ cup, so the answer is 1 ¾ servings because ¾ is ¼ less than a whole.
Demetrius says that the answer is 1 2/3 servings because there was one entire ¾ cup serving and 2 of the 3 parts it would take to make another full serving.
(Source: Adapted from Mathematics for Elementary Teachers, Sybilla Beckman, 2nd ed., 2008)
Submit your idea for an investigation to InterMath.