3.OA.A.1

Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.

 
47 Lesson(s)
   

Equal Groups on a Number Line

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

This lesson has children practicing working with equal groups as a set of objects, not a single number to "count by".

Standards:
 
Favorites (32)
 
Resources (12)
 
Reflections (1)
number line clip art1
   

The Story Of Multiplication Day 1

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

Children construct understanding of multiplication as units, of units, by communicating their thinking sharing drawings, mental models, and stories to make sense of their work.

 
Favorites (41)
 
Resources (8)
 
Reflections (1)
multiplication story
   

X Represents Groups Of

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

Children will work to write math stories that could be used to describe situations for a given multiplication expression, using the correct multiplier and group size.

 
Favorites (10)
 
Resources (16)
 
Reflections (1)
rows of pumpkins
   

The Story of Multiplication Day 2

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

In the second day of a two day lesson students work on expressing multiplication in various ways, and also work to develop their math communication and critiquing skills.

Standards:
 
Favorites (14)
 
Resources (11)
 
Reflections (1)
multiplication story
   

Tubing Tens - Cool Off with an Imaginary River Adventure

3rd Grade Math » Unit: Multiplication
3rd Grade Math » Unit: Multiplication
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

If you know how to count by tens, you can solve multiplication problems in which ten is a factor.

Standards:
 
Favorites (16)
 
Resources (12)
img 4169neamtp
   

Naming Arrays

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

After partners have worked with each other and have some practice creating arrays, it is time to challenge them to define the concept demonstrated by an array and how it can be used to solve problems.

Standards:
 
Favorites (13)
 
Resources (16)
 
Reflections (1)
lego array
   

Math with Maples

3rd Grade Math » Unit: Division in Context
3rd Grade Math » Unit: Division in Context
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Patterns in division and multiplication can be found in nature, and an understanding of these patterns enables scientists to conduct systematic research.

 
Favorites (12)
 
Resources (16)
lobes leaves lesson image
   

Arrays Focusing On Rows and Columns

3rd Grade Math » Unit: Multiplication 2
3rd Grade Math » Unit: Multiplication 2
Diane Siekmann
Phoenix, AZ
Environment: Urban
 
Big Idea:

Students develop a meaning of multiplication through the use of arrays.

 
Favorites (8)
 
Resources (12)
 
Reflections (1)
lecture hall
   

Tubing Tens - Create a Story

3rd Grade Math » Unit: Multiplication
3rd Grade Math » Unit: Multiplication
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Drawing pictures can help you learn and practice basic multiplication facts.

 
Favorites (9)
 
Resources (19)
 
Reflections (1)
tubing tens student work example
   

Fun with Four: Decomposing to Known Factors of 1, 2, and 5

3rd Grade Math » Unit: Multiplication
3rd Grade Math » Unit: Multiplication
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Students act as problem solvers to take an unknown fact and solve it by breaking it down into pieces that are known.

 
Favorites (11)
 
Resources (15)
 
Reflections (1)
fun with fours cover
   

Variables

3rd Grade Math » Unit: Understanding Multiplication
3rd Grade Math » Unit: Understanding Multiplication
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

Children will learn the term variable and then work to "attack" a problem using what they know about the relationship between multiplication and division to solve for an unknown.

 
Favorites (9)
 
Resources (12)
 
Reflections (1)
variables
   
3rd Grade Math » Unit: Multiplication
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Much of what you learn is built upon the foundation of that which you already know.

Standards:
 
Favorites (15)
 
Resources (14)
 
Reflections (1)
rufous foam nest tree frog  chiromantis rufescens wikimediacommons
   

The Multiplication and Division Connection

3rd Grade Math » Unit: Sharing Equally with Division
3rd Grade Math » Unit: Sharing Equally with Division
Sarah Maffei
Environment: Urban
 
Big Idea:

Students can solve multiplication and division problems quickly by recognizing the relationship between the two operations.

 
Favorites (18)
 
Resources (11)
 
Reflections (1)
student presentation
   

Multiplication Models and Structure

3rd Grade Math » Unit: Multiplication
3rd Grade Math » Unit: Multiplication
Diane Siekmann
Phoenix, AZ
Environment: Urban
 
Big Idea:

Multiplication sentence structure using models to solve for unknown variables in multiplication.

Standards:
 
Favorites (5)
 
Resources (15)
 
Reflections (1)
flowers for equal groups
   

Big Groups and Big Products

3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
Sarah Maffei
Environment: Urban
 
Big Idea:

Big groups and big products can be broken apart into smaller groups of tens and ones to make it easier to multiply and find the product

 
Favorites (10)
 
Resources (15)
 
Reflections (1)
multiplication
Common Core Math
 
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