Unit 4

Section A: Proportional Relationships with Fractions

• Lesson 1: Lots of Flags

  Let’s explore the U.S. flag.

  • Lesson Activities
  • Practice Problems

• Lesson 2: Ratios and Rates with Fractions

  Let’s calculate some rates with fractions.

  • Lesson Activities
  • Practice Problems

• Lesson 3: Revisiting Proportional Relationships

  Let’s use constants of proportionality to solve more problems.

  • Lesson Activities
  • Practice Problems

• Lesson 4: Half as Much Again

  Let’s use fractions to describe increases and decreases.

  • Lesson Activities
  • Practice Problems

• Lesson 5: Say It with Decimals

  Let’s use decimals to describe increases and decreases.

  • Lesson Activities
  • Practice Problems

Section B: Percent Increase and Decrease

• Lesson 6: Increasing and Decreasing

  Let’s use percentages to describe increases and decreases.

  • Lesson Activities
  • Practice Problems

• Lesson 7: One Hundred Percent

  Let’s solve more problems about percent increase and percent decrease.

  • Lesson Activities
  • Practice Problems

• Lesson 8: Percent Increase and Decrease with Equations

  Let’s use equations to represent increases and decreases.

  • Lesson Activities
  • Practice Problems

• Lesson 9: More and Less than 1%

  Let’s explore percentages smaller than 1%.

  • Lesson Activities
  • Practice Problems

Section C: Applying Percentages

• Lesson 10: Tax and Tip

  Let’s learn about sales tax and tips.

  • Lesson Activities
  • Practice Problems

• Lesson 11: Percentage Contexts

  Let’s learn about more situations that involve percentages.

  • Lesson Activities
  • Practice Problems

• Lesson 12: Finding the Percentage

  Let’s find unknown percentages.

  • Lesson Activities
  • Practice Problems

• Lesson 13: Measurement Error

  Let’s use percentages to describe how accurately we can measure.

  • Lesson Activities
  • Practice Problems

• Lesson 14: Percent Error

  Let’s use percentages to describe other situations that involve error.

  • Lesson Activities
  • Practice Problems

• Lesson 15: Error Intervals

  Let’s solve more problems about percent error.

  • Lesson Activities
  • Practice Problems

Section D: Let’s Put It to Work

• Optional

  Lesson 16: Posing Percentage Problems

  Let’s explore how percentages are used in the news.

  • Lesson Activities