7.3 Proportional Relationships

Beginning Lesson

Aws4 request&x amz signedheaders=host&x amz signature=d78889782741c822e0dc5200ff41a115232d0cab91dcfa2a79859b58e2fb82d8

New Twenty

How does life expectancy affect how you live your life? Students use proportions to determine what life expectancy must have been in the past in order for the phrase "30 is the new 20" to be accurate, and explore how life might change as life expectancy changes.

Topic: Ratios and Proportional Relationships (RP)

Middle Lessons

Aws4 request&x amz signedheaders=host&x amz signature=1c8db4a239e15e6ea27b0fad1e34671dca80501792b2fa3c145e8ebc76180e05

Civic Duty

Is it worth paying extra for a hybrid car? Students use proportional reasoning to determine how much hybrid owners save on gas, and how long it will take to make up the price difference.

Topic: Expressions and Equations (EE), Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=d0c335a1966dad7a99239a51f29bca3ce73314edb7355a4620f094acf2246f2c

Coupon Clipping

Are coupons always a good deal? Students use unit rates and percents to explore the math and psychology behind retail discounts.

Topic:
Aws4 request&x amz signedheaders=host&x amz signature=70bb36277329b91b24acd26e3b4de306e89291f7ceb1270fbe3e5d4fcf020376

Family Plan

How much should you pay for a shared wireless plan? Students use proportional reasoning to predict whether a family will go over their minutes, messages, or megabytes, and decide how much each person should pay.

Topic: Expressions and Equations (EE), Number System (NS), Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=cea186230834871710144a1ab74ee3e5bba865e9d649a041addca1e944b6f9a1

I'd Like to Buy a Vowel

How much should vowels cost on Wheel of Fortune? Students use ratios and percents to explore what would happen if Wheel of Fortune charged prices for vowels based on how often they come up.

Topic: Ratios and Proportional Relationships (RP), Statistics and Probability (SP)
Aws4 request&x amz signedheaders=host&x amz signature=f9bc727ba51f75c755cbe445c0ad67860f1983c089767c9a67f3f06e693aa12e

Need for Speed

How much does it cost to drive at different speeds? Students use unit rates and proportions to explore how a car's fuel economy changes as it drives faster and faster.

Topic: Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=f9c530a7d0cc643fa2b926e4f814ec38fd5b20bf58f2fe49cfc2b2b930e69332

Text Me Later

How dangerous is texting and driving? Students use proportional reasoning to determine how far a car travels in the time it takes to send a message, and explore the consequences of distracted driving.

Topic: Ratios and Proportional Relationships (RP), Circles (C)

End Lessons

Aws4 request&x amz signedheaders=host&x amz signature=b70e4cf80b79b63684f19b29f4d08a2a4afd97c132ec1009de585a51b7e74380

On Your Mark

Do taller sprinters have an unfair advantage? Students use proportions to find out what would happen if Olympic races were organized by height.

Topic: Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=d0c335a1966dad7a99239a51f29bca3ce73314edb7355a4620f094acf2246f2c

Coupon Clipping

Are coupons always a good deal? Students use unit rates and percents to explore the math and psychology behind retail discounts.

Topic:
Aws4 request&x amz signedheaders=host&x amz signature=70bb36277329b91b24acd26e3b4de306e89291f7ceb1270fbe3e5d4fcf020376

Family Plan

How much should you pay for a shared wireless plan? Students use proportional reasoning to predict whether a family will go over their minutes, messages, or megabytes, and decide how much each person should pay.

Topic: Expressions and Equations (EE), Number System (NS), Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=f9bc727ba51f75c755cbe445c0ad67860f1983c089767c9a67f3f06e693aa12e

Need for Speed

How much does it cost to drive at different speeds? Students use unit rates and proportions to explore how a car's fuel economy changes as it drives faster and faster.

Topic: Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=f9c530a7d0cc643fa2b926e4f814ec38fd5b20bf58f2fe49cfc2b2b930e69332

Text Me Later

How dangerous is texting and driving? Students use proportional reasoning to determine how far a car travels in the time it takes to send a message, and explore the consequences of distracted driving.

Topic: Ratios and Proportional Relationships (RP), Circles (C)