This Instructional Activity is a part of the Lesson 9, Unit 3, Grade 6. Students are given cards, each of which contains an original price and a new price, as shown. There are many paths students could use to reason about whether or not to accept a deal. For example, if the original deal was $3.50 for 10 juice boxes and the new deal is $2.40 for 6 juice boxes, they could: Find and compare the unit rates for both the original pack and the new pack. If the unit rate is the same, the deal is fair.