## Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 × 4 = 24 is known, then 4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)

26 Lesson(s)

### Decomposing Arrays, Day 1

3rd Grade Math » Unit: Using Multiplication to Find Area
3rd Grade Math » Unit: Using Multiplication to Find Area
Troy, MI
Environment: Suburban

Big Idea:

#### Students need to practice deconstructing arrays with manipulatives in order to conceptualize the distributive property. This 3 day lesson takes the children through increasingly sophisticated activities to explore the "why" and "how" of this property.

Standards:

Favorites (16)

Resources (11)

Reflections (1)

3rd Grade Math » Unit: Multiplication 2
Phoenix, AZ
Environment: Urban

Big Idea:

Standards:

Favorites (12)

Resources (11)

Reflections (1)

### Distributive Property, Day 1

3rd Grade Math » Unit: Using Multiplication to Find Area
3rd Grade Math » Unit: Using Multiplication to Find Area
Troy, MI
Environment: Suburban

Big Idea:

Standards:

Favorites (9)

Resources (13)

Reflections (1)

### Associative Property

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Troy, MI
Environment: Suburban

Big Idea:

Standards:

Favorites (15)

Resources (13)

Reflections (1)

### Distributive Property, Day 2

3rd Grade Math » Unit: Using Multiplication to Find Area
3rd Grade Math » Unit: Using Multiplication to Find Area
Troy, MI
Environment: Suburban

Big Idea:

Standards:

Favorites (3)

Resources (12)

Reflections (1)

### Decomposing Given Large Areas, Day 3

3rd Grade Math » Unit: Using Multiplication to Find Area
3rd Grade Math » Unit: Using Multiplication to Find Area
Troy, MI
Environment: Suburban

Big Idea:

#### Students have been working with decomposing arrays in order to practice finding small areas and putting the totals together. In this third lesson, they will work on finding smaller areas that make the mental math more feasible.

Standards:

Favorites (2)

Resources (15)

Reflections (1)

3rd Grade Math » Unit: Multiplication
Tucson, AZ
Environment: Urban

Big Idea:

Standards:

Favorites (12)

Resources (15)

Reflections (1)

### Associative Property With Manipulatives

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Troy, MI
Environment: Suburban

Big Idea:

Standards:

Favorites (12)

Resources (15)

Reflections (2)

### The Multiplication and Division Connection

3rd Grade Math » Unit: Sharing Equally with Division
3rd Grade Math » Unit: Sharing Equally with Division
Environment: Urban

Big Idea:

Standards:

Favorites (22)

Resources (11)

Reflections (1)

### Arrays, Arrays, Arrays

3rd Grade Math » Unit: Multiplication
3rd Grade Math » Unit: Multiplication
Phoenix, AZ
Environment: Urban

Big Idea:

Standards:

Favorites (16)

Resources (17)

Reflections (1)

### Multiples in a Minute

5th Grade Math » Unit: Multiplication Madness
5th Grade Math » Unit: Multiplication Madness
Scottsdale, AZ
Environment: Urban

Big Idea:

Standards:

Favorites (4)

Resources (16)

Reflections (1)

### Discovering Relationships: Multiplication & Division (1 of 2)

3rd Grade Math » Unit: The Relationship Between Multiplication and Division
3rd Grade Math » Unit: The Relationship Between Multiplication and Division
Environment: Urban

Big Idea:

Standards:

Favorites (14)

Resources (14)

Reflections (1)

### Multiplication Properties

4th Grade Math » Unit: Multiplication and Division Meanings
4th Grade Math » Unit: Multiplication and Division Meanings
Memphis, TN
Environment: Urban

Big Idea:

Standards:

Favorites (6)

Resources (17)

Reflections (1)

### Using the Multiplication and Division Relationship to Solve

3rd Grade Math » Unit: Sharing Equally with Division
3rd Grade Math » Unit: Sharing Equally with Division
Environment: Urban

Big Idea:

Standards:

Favorites (4)

Resources (13)

Reflections (1)

### Decomposing Given Large Areas Day 2

3rd Grade Math » Unit: Using Multiplication to Find Area
3rd Grade Math » Unit: Using Multiplication to Find Area
Troy, MI
Environment: Suburban

Big Idea:

Standards:

Favorites (4)

Resources (11)

Reflections (1)
Common Core Math