2 Digit Subtraction Strategies Resource Book for Subtraction Within 100

Description

This math resource helps students practice 2 digit subtraction strategies (including break apart, open number line, hundred charts, and compensation) as well as make sense of word problems. It also focuses on student writing in math, specifically with how they explain their thinking in written sentences when they solve a problem.  Students do exploratory and collaborative activities using a Subtraction Strategies Resource Book. After using it to practice their strategies, students can keep this book as a reference to go back to whenever they need help with problem-solving.

The download includes the following:

Detailed Teacher Guidelines
Subtraction Strategies Within 100 Resource Book for students
Pre-Assessments 
Post Assessments 
Grading Rubrics for Pre and Post Assessments 

Title & Headings for Tree Map Chart

The Resource Book provides practice with the following strategies, and includes a blank template if you would like to use it to teach additional strategies:

Open Number Line

Hundreds Chart

Break Apart

Compensation

In addition, it provides practice with 2 digit subtraction word problems using the Find, Know, Show, Solve strategy. It also has these visual references to help students with writing explanations about how they solved:
Mathematical Explanation checklist 
Written Example 
Sentence starter frames
Transition words 
Academic Vocabulary (one visual with provided words, and also a blank template for the class to brainstorm their own)

Additional Simple Sentence Frames (for students who need extra support)

Please see the preview for pictures of all that’s included.

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