to make chocolate chip cookies, use 4 cups of flour for every 3 cups of chocolate chips. if charlie...
DESCRIPTION
5 ways to solve ratio problems Let’s Review 1) Table with addition Cups of grape juice2468 Cups of apple juiceTRANSCRIPT
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?
In this lesson you will learn to solve ratio problems by
choosing the strategy you like the best.
5 ways to solve ratio problems
Let’s Review
1) Table with addition
Cups of grape juice 2 4 6 8
Cups of apple juice 3 6 9 12
+3
+3
+2 +2+2
+3
Let’s ReviewLet’s Review
x4
x4
Cups of grape juice 2 8
Cups of apple juice 3 12
2) Table with multiplication
Let’s ReviewLet’s Review
3) Double number lines
cups of grape juicecups of apple juice
0
0
2
3
4
6
6
9
8
12
x4
x4
Let’s ReviewLet’s Review
4) Tape diagrams
cups of apple juice
cups of grape juice 2
3
12
3 3 3
3 x 4 = 12
2 2 2
2 x 4 = 8
Let’s RevieLet’s Review
5) Graphing
cups of grape juice
cups of apple juice
+3+
2
Let’s ReviewA Common Mistake
Thinking there is only 1 right way to solve a ratio problem
1) Table with addition2) Table with multiplication3) Double number lines4) Tape diagrams5) Graphing
Let’s ReviewCore LessonTo 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 flour 4
Cups of chocolate chips
3
Cups of flour 4 8
Cups of chocolate chips
3 6
+3
Cups of flour 4 8 12
Cups of chocolate chips
3 6 9
+4 +4
+3
1) Table with addition
Let’s ReviewCore LessonTo 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
x3
Cups of flour 4
Cups of chocolate chips
3
Cups of flour 4 12
Cups of chocolate chips
3
Cups of flour 4 12
Cups of chocolate chips
3 9
2) Table with multiplication
Let’s ReviewCore LessonTo 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
x3
Let’s ReviewCore LessonTo 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 flour4
3
124 x 3 = 12
3 x 3 = 9
4 4
3 3
Let’s ReviewCore Lesson 5) GraphingCups of flour
Cups of chocolate chips
xy
cups of flour
cups of choc. chips
Cups of flour 0
Cups of chocolate chips
0
Cups of flour 0 4
Cups of chocolate chips
0 3
Cups of flour 0 4 8
Cups of chocolate chips
0 3 6
Cups of flour 0 4 8 12
Cups of chocolate chips
0 3 6 9
+3
+4
+4
+3
In this lesson you have learned to solve ratio problems by
choosing the strategy you like the best.
Let’s ReviewGuided PracticeTo 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.
Let’s ReviewGuided Practice
Let’s ReviewGuided Practice
Let’s ReviewGuided Practice
Let’s ReviewGuided Practice
Let’s ReviewExtension 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.
Let’s ReviewExtension Activities
Which strategy do you like best for solving ratio problems? Why?
Let’s ReviewExtension 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.
Let’s ReviewQuick QuizStrawberries 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.