Toothpicks and lima beans

This Application Problem is a part of the Lesson 15, Unit 7, Grade 2. This problem gives students a hands-on opportunity to reason through the relationship between the size and number of length units: the smaller the length unit, the larger the number of units, and the larger the length unit, the smaller the number of units. This anticipates the comparison between centimeters and inches that students explore in Lesson 18.