Instructional Activity# Example 2: Big Al’s Used Cars

Lesson 14. Unit 1. Grade 7 EngageNY

EngageNY4 min(s)

This Instructional Activity is a part of the Lesson 14, Unit 1, Grade 7. In this lesson, students solve multi-step ratio problems including fractional markdowns, fractional commissions, fees, and discounts. Also, during the first year of implementation, this may be a good time to introduce tape diagrams since they can be completed side by side with algebraic thinking, and then students can use this type of model for future lessons. Have students verbalize how they would determine the sale prices with a discount rate of 1 Students should provide an idea that is similar to this: discount price = original price - rate times the original price.