Unit Price lesson

Understanding Rates and Unit Rates

Module 1 Lesson 7 Finding Unit rate to solve real world related problems.

Learning Target

I can understand how a rate is related to a ratio and use rate reasoning to find a unit rate.

Dropdown

​ A scientist studying hummingbirds recorded that a hummingbird flapped its wings 1,590 times in 30 seconds during normal flight.

Assuming a constant rate, how many times did the hummingbird flap its wings per second?​ ​ ​ ​ ​

Select answer

Open Ended

At this rate, how many times would the hummingbird flap its wings in 2 seconds? Justify your response.

Open Ended

How could knowing unit rates help you save money?

Which is the Better Buy?

Unit Rate = Unit Price

A grocery store sells a 6oz. container of yogurt for $0.78. The store also sells a 32oz. container of the same yogurt for $3.84.
To determine which is the better buy – per ounce – find the unit price of each item.
The unit price is the cost per unit of an item. You can use what you know about unit rates to find a unit price.

​Real Life Examples

​Let's Talk Strategy

​1. Finding how much 1 ounce costs....

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​2. Finding how much ounces they would get if they paid the same amount....

​Let's See If We Can Save Some Money!

​Remember:

• ​Find the unit rate to compare!

• ​Unit Rates are just equivalent ratios in the simplest form.

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Multiple Choice

Which is the better buy of salsa?

• $1.80 for 16 ounces

• $2.20 for 24 ounces

Poll

For Carolina’s birthday, her mother took her and four friends to a water park. Carolina’s mother can pay either $130 for a 5-pack of student tickets, or $28 for each individual student ticket.

Which ticket payment option has the lesser unit price?

• $130 for a 5-pack of student tickets

• $28 for each individual student ticket

Multiple Choice

Which is the better buy for ice cream bars?

• $4.92 for 10 bars

• $7.65 for 15 bars

Multiple Choice

Oreos $2.98 for 15.5 oz.
or
Chips Ahoy $2.50 for 14 oz.
Find the unit price of each and choose the better deal.

• Oreos
• Chips Ahoy

Multiple Choice

Which option is the better deal?
Doritos
$4.39 for 11.5 oz
or
Cheetos
9.75 oz for $3.24

• Doritos
• Cheetos

Multiple Choice

Coca-Cola $1.30 for 1 L

or

Pepsi $2.50 for 2 L

Find the unit price of each and choose the better deal.

• Pepsi

• Coca-Cola

Poll

What is your confidence level?

Open Ended

How would you describe unit rates to someone who has never heard of unit rates?

Open Ended

In your own words, how do you find a unit rate?