This Instructional Activity is a part of the Lesson 7, Unit 3, Grade 6. In a previous lesson about treadmill workouts, students calculated unit rates and identified ratios that have matching unit rates as equivalent. Here they make sense of this relationship from the other direction. Students explore the above by noticing structures in a table of equivalent ratios-that in addition to the values in the rows being equivalent ratios, the values in the columns have a multiplicative relationship. They see, specifically, that dividing the values of the two quantities in the ratio result in the same quotient-the associated unit rate-and that it can be used to reason about one quantity of the ratio when the other is known.