# Unit 4: My Reflections

## Lesson 1: Lots of Flags

• I remember how to compute percentages.
• I can find dimensions on scaled copies of a rectangle.

## Lesson 2: Ratios and Rates With Fractions

• I can solve problems about ratios of fractions and decimals.

## Lesson 3: Revisiting Proportional Relationships

• When there is a constant rate, I can identify the two quantities that are in a proportional relationship.
• I can use a table with 2 rows and 2 columns to find an unknown value in a proportional relationship.

## Lesson 4: Half as Much Again

• I can use the distributive property to rewrite an expression like $x+\frac12 x$ as $(1+\frac12)x$.
• I understand that “half as much again” and “multiply by $\frac32$” mean the same thing.

## Lesson 5: Say It with Decimals

• I can write fractions as decimals.
• I can use the distributive property to rewrite an equation like $x+0.5 x=1.5 x$.
• I understand that “half as much again” and “multiply by 1.5” mean the same thing.

## Lesson 6: Increasing and Decreasing

• I can draw a tape diagram that represents a percent increase or decrease.
• When I know a starting amount and the percent increase or decrease, I can find the new amount.

## Lesson 7: One Hundred Percent

• When I know the new amount and the percentage of increase or decrease, I can find the original amount.
• I understand that if I know how much a quantity has grown, then the original amount represents 100%.
• I can use a double number line diagram to help me solve percent increase and decrease problems.

## Lesson 8: Percent Increase and Decrease with Equations

• I can solve percent increase and decrease problems by writing an equation to represent the situation and solving it.

## Lesson 9: More and Less than 1%

• I can find percentages of quantities like 12.5% and 0.4%.
• I understand that to find 0.1% of an amount I have to multiply by 0.001.

## Lesson 10: Tax and Tip

• I understand and can solve problems about sales tax and tip.

## Lesson 11: Percentage Contexts

• I understand and can solve problems about commission, interest, markups, and discounts.

## Lesson 12: Finding the Percentage

• I can find the percentage increase or decrease when I know the original amount and the new amount.

## Lesson 13: Measurement Error

• I understand that all measurements include some error.
• I can represent measurement error as a percentage of the correct measurement.

## Lesson 14: Percent Error

• I can solve problems that involve percent error.

## Lesson 15: Error Intervals

• I can find a range of possible values for a quantity if I know the maximum percent error and the correct value.

## Lesson 16: Posing Percentage Problems

• I can write and solve problems about real-world situations that involve percent increase and decrease.