While the number lines are used as a tool for understanding the concept of dividing a fraction by a fraction, th goal is to enable students to be able to do so without the support of the number lines.
What to look for
Ask students how the number lines are connected to their thinking about division of fractions and the role of equivalent fractions in the process. This can lead to a productive discussion about the mathematical concepts.
How many (3/4)-cup servings are in (9/2) cups of yogurt?
Answer: 6 cups