1. To make chocolate chip cookies, use 4 cups of flour for every 3 cups of chocolate chips. If Charlie uses 12 cups of flour, how many cups of chocolate chips will he need to use?

2. In this lesson you will learn to solve ratio problems by choosing the strategy you like the best.

3. 5 ways to solve ratio problems Let’s Review 1) Table with addition Cups of grape juice2468 Cups of apple juice36912 +3 +2 +3

4. Let’s Review x4 Cups of grape juice28 Cups of apple juice312 2) Table with multiplication

5. Let’s Review 3) Double number lines cups of grape juice cups of apple juice 0 0 2 3 4 6 6 9 8 12 x4

6. Let’s Review 4) Tape diagrams cups of apple juice cups of grape juice 2 3 12 333 3 x 4 = 12 222 2 x 4 = 8

7. Let’s Revie Let’s Review 5) Graphing cups of grape juice cups of apple juice +3 +2

8. Let’s Review A Common Mistake Thinking there is only 1 right way to solve a ratio problem 1) Table with addition 2) Table with multiplication 3) Double number lines 4) Tape diagrams 5) Graphing

9. Let’s Review Core Lesson To make chocolate chip cookies, use 4 cups of flour for every 3 cups of chocolate chips. If Charlie uses 12 cups of flour, how many cups of chocolate chips will he need to use? Cups of flour Cups of chocolate chips Cups of flour4 Cups of chocolate chips 3 Cups of flour48 Cups of chocolate chips 36 +3 Cups of flour4812 Cups of chocolate chips 369 +4 +3 1) Table with addition

10. Let’s Review Core Lesson To make chocolate chip cookies, use 4 cups of flour for every 3 cups of chocolate chips. If Charlie uses 12 cups of flour, how many cups of chocolate chips will he need to use? Cups of flour Cups of chocolate chips x3 Cups of flour4 Cups of chocolate chips 3 Cups of flour412 Cups of chocolate chips 3 Cups of flour412 Cups of chocolate chips 39 2) Table with multiplication

11. Let’s Review Core Lesson To make chocolate chip cookies, use 4 cups of flour for every 3 cups of chocolate chips. If Charlie uses 12 cups of flour, how many cups of chocolate chips will he need to use? 3) Double number line cups of flour cups of choc. chips 0 0 4 3 12 9 x3

12. Let’s Review Core Lesson To make chocolate chip cookies, use 4 cups of flour for every 3 cups of chocolate chips. If Charlie uses 12 cups of flour, how many cups of chocolate chips will he need to use? 4) Tape diagram cups of choc. chips cups of flour 4 3 124 x 3 = 12 3 x 3 = 9 44 33

13. Let’s Review Core Lesson 5) Graphing Cups of flour Cups of chocolate chips x y cups of flour cups of choc. chips Cups of flour0 Cups of chocolate chips 0 Cups of flour04 Cups of chocolate chips 03 Cups of flour048 Cups of chocolate chips 036 Cups of flour04812 Cups of chocolate chips 0369 +3 +4 +3

14. In this lesson you have learned to solve ratio problems by choosing the strategy you like the best.

15. Let’s Review Guided Practice To make light blue paint, you mix 2 gallons of white paint for every 5 gallons of blue paint. How many gallons of white paint will you need for 20 gallons of blue paint? Use any method to solve this problem.

16. Let’s Review Guided Practice

17. Let’s Review Guided Practice

18. Let’s Review Guided Practice

19. Let’s Review Guided Practice

20. Let’s Review Extension Activities Soda is on sale: 2 bottles for $4. How much would it cost to buy 7 bottles of soda? Use any method to solve this problem.

21. Let’s Review Extension Activities Which strategy do you like best for solving ratio problems? Why?

22. Let’s Review Extension Activities To make Kool-Aid, use 5 tablespoons of Kool-Aid mix for every 3 cups of water. How many cups of water will you need for 10 tablespoons of Kool-Aid mix? Use any method to solve this problem.

23. Let’s Review Quick Quiz Strawberries are on sale for a price of $5 for 2 pounds. If you buy 10 pounds of strawberries, how much will it cost? Use any method to solve this problem. Ellie made iced tea by using 3 cups of sugar for every 7 cups of tea. If she used 21 cups of tea, how many cups of sugar did she use? Use any method to solve this problem.