This Problem Set is a part of the Lesson 5, Unit 6, Grade 3. In this lesson, students use the number line as a measurement tool to partition a six-inch strip into 6 equal increments. They repeat the process by partitioning the same strip into 12 equal increments and determine that it shows half-inch intervals. Finally, students partition the strip into 24 equal increments to determine that they have created quarter-inch intervals.