3.OA.A.4

Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = _ ÷ 3, 6 × 6 = ?

 
11 Lesson(s)
   

Exploring the Idea of Division

3rd Grade Math » Unit: Introduction to Basic Division
3rd Grade Math » Unit: Introduction to Basic Division
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

The cognitive dissonance experienced when encountering novel, out of level division problems will lead to more deeply internalized understanding of the basic concepts of division to be mastered at the 3rd grade level.

 
Favorites (14)
 
Resources (12)
 
Reflections (1)
banana lesson image
   

Quotients - Just the Basics

3rd Grade Math » Unit: Introduction to Basic Division
3rd Grade Math » Unit: Introduction to Basic Division
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Just like multiplication, addition, and subtraction, division problems involve patterns and there are methodical ways in which manipulatives can be used to solve division problems with small dividends and divisors of 1 through 10.

 
Favorites (14)
 
Resources (18)
 
Reflections (1)
boy writing
   

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
   

Multiply and Divide by 10

3rd Grade Math » Unit: Fluency to Automoticity
3rd Grade Math » Unit: Fluency to Automoticity
Michelle Marcus
Troy, MI
Environment: Suburban
 
Big Idea:

Counting by 10's is easy for students of this age. Knowing that base 10 can be used to help multiply and divide in the higher numbers by decomposing is critical. This lesson sets the base for future work.

 
Favorites (2)
 
Resources (12)
 
Reflections (1)
pile of dimes
   

Humans vs Narwhals

3rd Grade Math » Unit: Math and Me: Nutrition, Health and More
3rd Grade Math » Unit: Math and Me: Nutrition, Health and More
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Who's the REAL meat eater here? Let's do some math and find out!

 
Favorites (7)
 
Resources (9)
humans vs the narwhals
   

Using the Multiplication and Division Relationship to Solve

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 (4)
 
Resources (13)
 
Reflections (1)
ts 3 8 wi 5
   

The Multiplication - Division Relationship

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

Critical Area 1 for third grade states that students must use a variety of solution strategies in order to learn the relationship between multiplication and division. This lesson takes the students through several strategies.

 
Favorites (2)
 
Resources (15)
 
Reflections (1)
rubic s cube
   

Navigating Road Blocks in Problem Solving

3rd Grade Math » Unit: Multiply or Divide with Word Problems
3rd Grade Math » Unit: Multiply or Divide with Word Problems
Sarah Maffei
Environment: Urban
 
Big Idea:

Students can solve real world problems using their understanding of multiplication and division and recognizing their relationship.

 
Favorites (1)
 
Resources (12)
 
Reflections (1)
road block
   

Explaining Thinking in a Journal

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

Children need an opportunity to communicate their math understanding in various ways. Journaling is a powerful tool for both the learner and the instructor.

 
Favorites (1)
 
Resources (9)
 
Reflections (1)
division in journal
   

Designs with Nines: Patterns in Multiplication and Division (Day 1)

3rd Grade Math » Unit: Introduction to Basic Division
3rd Grade Math » Unit: Introduction to Basic Division
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Making designs and examining visual patterns can help students learn their basic facts!

 
Favorites (10)
 
Resources (18)
 
Reflections (1)
designs with
   

Finding What's Missing

3rd Grade Math » Unit: Multiply or Divide with Word Problems
3rd Grade Math » Unit: Multiply or Divide with Word Problems
Sarah Maffei
Environment: Urban
 
Big Idea:

Students can solve real world problems using their understanding of multiplication and division and the relationship they share.

 
Favorites (4)
 
Resources (19)
 
Reflections (1)
student warm up work
Common Core Math
 
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