This Instructional Activity is a part of the Lesson 4, Unit 3, Grade 6. In this activity, students convert between pounds and kilograms. The conversion factor is not given as a unit rate. As a result of the work in the previous activity, some students may compute and use unit rates, and some may still reason using various representations of equivalent ratios. Students should have learned efficient methods for multiplying fractions in grade 5, but may need support.