# 5.3 Multiplying and Dividing Fractions

## Unit Goals

- Students extend multiplication and division of whole numbers to multiply fractions by fractions and divide a whole number and a unit fraction.

### Section A Goals

- Recognize that $\frac{a}{b} \times \frac{c}{d}=\frac{a \ \times \ c}{b \ \times \ d}$ and use this generalization to multiply fractions numerically.
- Represent and describe multiplication of a fraction by a fraction using area concepts.

### Section B Goals

- Divide a unit fraction by a whole number using whole-number division concepts.
- Divide a whole number by a unit fraction using whole-number division concepts.

### Section C Goals

- Solve problems involving fraction multiplication and division.

### Lessons

- 1
#### One Piece of One Part

- 2
#### Represent Unit Fraction Multiplication

- 3
#### Multiply Unit Fractions

PLC Activity

- 4
#### Situations about Multiplying Fractions

- 5
#### Multiply a Unit Fraction by a Non-unit Fraction

- 6
#### Multiply Fractions

- 7
#### Generalize Fraction Multiplication

- 8
#### Apply Fraction Multiplication

- 9
#### My Own Flag (optional)