# Kristen O'Connor

27 Lessons
Varnum Brook
Pepperell, MA
Student Environment:
Rural
Similar Master Teachers
170 Lessons
Village Elementary School-york
York, ME
63 Lessons
29 Lessons
Wilkins Elementary School
Jackson, MS

(4 Units, 27 Lessons)

#### 1. The Recipe for a Great Word Problem

Big Idea: The big idea of this lesson is to have students write their own word problems to help them have a better understanding of mathematical operations, as they relate to real world scenarios.
Standards:
Favorites (98)   Resources (14)   Reflections (1)

#### 2. Domino Addition: Understanding the Part/Part/Whole Relationship

Big Idea: The big idea of this lesson is the understanding that addition can be represented as parts of a whole and that we can use addition sentences to represent those parts.
Standards:
Favorites (30)   Resources (20)   Reflections (1)

#### 3. Addition in the Real World

Big Idea: The big idea of this lesson is that we can think of addition in the real world as the joining of two parts to make a whole. The use of addition number sentences can show how we join the parts to make the whole.
Standards:
Favorites (16)   Resources (17)   Reflections (1)

#### 4. Much Much More Than Take Away

Big Idea: The big idea of this lesson is the understanding that subtraction number sentences can show how to separate parts from a whole or by comparison.
Standards:
Favorites (15)   Resources (14)   Reflections (1)

#### 5. I've Got More Than You

Big Idea: Students often think that subtraction is simply “take away.” The goal of this lesson is to allow students to see the comparison (difference) between two numbers.
Standards:
Favorites (52)   Resources (17)   Reflections (1)

#### 6. We Are All a Happy Fact Family

Big Idea: Addition and subtraction are related! Every subtraction fact has a related addition number sentence, and every addition fact has a related subtraction number sentence.
Standards:
Favorites (37)   Resources (17)   Reflections (1)

#### 7. Put It All Together

Big Idea: As mathematical thinkers we must use the information from a real world problem and determine what is the correct method to solve the problem.
Standards:
Favorites (40)   Resources (15)   Reflections (1)