• Dear Family Member,
Your student’s math class will soon begin studying the unit entitled “Proportionality: Ratios and
Rates.”
This unit addresses important California Common Core Standards in the Critical Areas of
developing understanding of and ability to apply ratio concepts.

Domain 6.RP Ratios and Proportional Relationships
Cluster Understand ratio concepts and use ratio reasoning to solve problems.

Our study of this unit focuses on the essential questions listed below.
Unit 3: Proportionality: Ratios and Rates
Essential Questions
• How do you use ratios to compare two quantities?
• How do you use rates to compare quantities?
• How can you use ratios and rates to make comparisons and predictions?
• How can you represent real-world problems involving ratios and rates with tables and
graphs?
• How can you solve problems with proportions?
• How do you convert units within a measurement system?
• How can you use ratios to convert measurements?
• How can you write a ratio as a percent?
• How can you write equivalent percents, fractions, and decimals?
• How do you use percents to solve problems?

To stay up to date with our progress, ask often about what’s happening in math class.
One activity you can do together at the beginning of each unit is to
discuss the featured career in your student’s math book. At the
end of the unit you and your student can further explore this career
through the Math in Career Activity on the Unit Project page.
There are also many exciting online resources available to you and your student including
Math on the Spot video tutorials, Personal Math Trainer, and Animated Math activities.
Thank you for your time and interest. Your participation in your student’s education is a sure way
to encourage learning!
Sincerely,
Last Modified on August 13, 2015