  
- In Unit 1, students enhance their understanding
of percent and ratio as they collect and
analyze data about music.
- Unit 2 builds on this informal introduction
as students explore ratio and the relationships
among ratios, fractions, and percents.
- In Unit 3, students investigate ratios
in recipes, national statistics, and advertising.
Throughout the units, students learn to
contribute ideas, give and receive feedback,
explain their thinking in writing, and allow
others to express their opinions.
 
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