**Math**

*Grade 1 Common Core Standards*

Module 2: Introduction to Place Value Through Addition and

Subtraction Within 20

I Can Use Addition and Subtraction to Help Me Understand Math

Subtraction Within 20

**Essential Questions:**- How can different strategies be helpful when solving a problem?
- In what ways can operations (subtraction and addition) affect numbers?
- How can 10s be helpful when adding and subtracting?
- How are 10s helpful when adding and subtracting? (bundles and 10 frames)

**Enduring Understandings:**- Students will understand how to represent and solve problems using addition and subtraction within 20.
- Students will begin to apply addition and subtraction to problems using an equation opening up their ability to begin to solve real-world problems.

**What students should be able to do at end of Module 2:**I Can Use Addition and Subtraction to Help Me Understand Math

- I can use strategies to solve addition word problems.
- I can use strategies to solve subtraction word problems.
- I can solve word problems by adding 3 whole numbers.
- I can use the commutative property of addition.
- I can use the associative property of addition.
- I can use an addition fact to help me answer a subtraction problem.
- I can count to help me add and subtract.
- I can add facts within 20.
- I can subtract facts within 20.
- I know what an equal sign means.
- I can tell if addition and subtraction equations are true or false.
- I can tell the missing number in an addition or subtraction problem.

**Module 1: Sums and Differences to 10****Essential Questions**:

How are different strategies helpful when solving a problem?

In what ways can operations (subtraction and addition) affect numbers?

**Enduring Understandings:**

Students will understand how to represent and solve problems using addition and subtraction within 10. Students will begin to apply addition and subtraction to problems using an equation opening up their ability to begin to solve real-world problems.

**What students should be able to do at end of Module 1:**

I Can Use Addition and Subtraction to Help Me Understand Math

- I can use strategies to solve addition word problems.

- I can use strategies to solve subtraction word problems.

- I can solve word problems by adding 3 whole numbers.
- I can use the commutative property of addition.