Lesson 15, Session 3: Refine Rate Concepts

Poll

Which Would You Rather?

• 10 apples for $10.00

• 2 apples for $3.00

• 8 apples for $4.00

​Chicken Broth	​5 cups	​	​20 cups
​Rice	​1 cup	​	​

Multiple Choice

Malcolm makes chicken rice soup with his grandmother. Their family recipe calls for
5 cups of chicken broth per cup of brown rice. How many cups of brown rice are needed for 20 cups of chicken broth?

• 4 cups of brown rice
• 3 cups of brown rice
• 6 cups of brown rice
• 2 cups of brown rice

​Dollars	​$2	​$1	​
​	​	​	​

​Vanilla Tea

Cinnamon Tea

​Dollars	​$1	​	​
​Ounces	2​	​	​

Multiple Choice

At a tea shop, a package of vanilla tea weighs 1 ounce and costs $2. Cinnamon tea is priced at 2 ounces per dollar. Use rates to show which tea is more expensive per ounce. Include a model in your response.

• Vanilla tea is less expensive per ounce than cinnamon tea.
• Cinnamon tea is less expensive per ounce than vanilla tea.
• Vanilla tea is more expensive per ounce than Cinnamon tea.

Open Ended

A school laser printer prints 72 pages in 6 minutes. Alanna’s home printer prints twice as many pages in twice as many minutes. Alanna says her printer’s rate in pages per minute is two times the rate of the school printer. Do you agree or disagree? Explain.

Labelling

A box holds 12 cups of cereal. This amount is equivalent to 16 servings.

PART A Use a model to show the number of cups of cereal per serving and the number of servings per cup of cereal.

Drag labels to their correct position on the image

16

8

3/4

1 1/2

1 1/3

4

1/2

12

Dropdown

PART B  Explain how your model shows each rate.



There is ​

Select answer

for every 1 ​

Select answer

and ​

Select answer

for every 1 ​

Select answer

.

Multiple Choice

A box holds 12 cups of cereal. This amount is equivalent to 16 servings. If you want to know how many cups of the cereal are in a box that holds 24 servings, which rate would you use? Explain.

• Cups per Serving

• Servings per Cup

Multiple Choice

A farm stand sells 3 quarts of peaches for $15. Use a model to write a rate for this situation. What does this rate tell you?

• The rate is $5 per quart.
• The rate is $7 per quart.
• The rate is $3 per quart.
• The rate is $10 per quart.