# Mary Ellen Kanthack

4th Grade Math
140 Lessons
Brookwood Middle
Genoa City, WI
Student Environment:
Rural
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#### 1. Subtracting Using dots, bars, squares and rectangles as a place value model.

Big Idea: Students use a simple method of using pictures that represent place value to subtract.Then they will transfer the concept to a standard algorithm .
Standards:
Favorites (12)   Resources (19)   Reflections (2)

#### 2. Estimation in Subtraction Using Real Life Scenarios

Big Idea: Students use real life scenarios to practice estimation skills, number sense and critical thinking by using Real Estate Ads and a \$5,000,000 budget!
Standards:
Favorites (5)   Resources (21)   Reflections (4)

#### 3. Subtraction Across Zeros: Using Place Value Understanding to Talk it Through

Big Idea: Students examine misconceptions and learn to use place value language to regroup and subtract fluently using a place value chart.
Standards:
Favorites (29)   Resources (17)   Reflections (2)

#### 4. RTI : Using the Lead Number to Estimate Addition and Subtraction

Big Idea: Students use the concept of a train to understand the lead number and how to estimate using a standard multi-digit algorithm.
Standards:
Favorites (4)   Resources (16)   Reflections (1)

#### 5. Get Your Game on and Subtract Fluently with Multi-digits!

Big Idea: Students choose between two games to improve critical thought about place value and mastering multi-digit subtraction.
Standards:
Favorites (13)   Resources (17)   Reflections (1)

#### 6. Assessment: Addition

Big Idea: Students show what they know about adding multidigit numbers and place value.
Standards:
Favorites (7)   Resources (7)   Reflections (1)

#### 7. Assessment: Subtraction

Big Idea: Students show their understanding through a formal assessment.
Standards:
Favorites (1)   Resources (7)   Reflections (1)
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