1.OA.A.1

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- 1.OA.A.1Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
- 1.OA.A.2Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

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## 1.OA.A.1

## Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

81 Lesson(s)

### Counting the Total

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

### Add or subtract using word problems

1st Grade Math »
Unit: Single Digit Addition and Subtraction

1st Grade Math »
Unit: Single Digit Addition and Subtraction

### What is a story problem?

1st Grade Math »
Unit: Creating a Culture of Math

1st Grade Math »
Unit: Creating a Culture of Math

### What are our norms for how we listen?

1st Grade Math »
Unit: Creating a Culture of Math

1st Grade Math »
Unit: Creating a Culture of Math

### Unit Assessment on Measurement Concepts

1st Grade Math »
Unit: Non Standard Measuring

1st Grade Math »
Unit: Non Standard Measuring

Big Idea:

#### Move over Van Halen because today we are all going to "Jump." So go ahead and jump as students solve an assessment piece and story problems involving jump lengths. If you are under 30, please Google Van Halen before proceeding.

Favorites
(7)

Resources
(21)

Reflections
(1)

### Explain a double

1st Grade Math »
Unit: Problem Solving Addition

1st Grade Math »
Unit: Problem Solving Addition

### Seven Apples and Bananas

1st Grade Math »
Unit: Building Numbers

1st Grade Math »
Unit: Building Numbers

### Addition and Subtraction Carnival

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

### Counting From A Number

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

Big Idea:

#### Students will continue working with games that ask them to use the counting on strategy. The lesson will end with a story problem that allows for the students to use the counting on strategy in a real world situation.

Standards:

Favorites
(9)

Resources
(19)

Reflections
(1)

### Cookie Mysteries

1st Grade Math »
Unit: Missing Parts: Unknowns in All Positions

1st Grade Math »
Unit: Missing Parts: Unknowns in All Positions

### Peas and Carrots...Carrots and Peas

1st Grade Math »
Unit: Properties of Addition and Subtraction

1st Grade Math »
Unit: Properties of Addition and Subtraction

### Crayon Box Combinations

1st Grade Math »
Unit: Properties of Addition and Subtraction

1st Grade Math »
Unit: Properties of Addition and Subtraction

### The Fishing Trip

1st Grade Math »
Unit: Non Standard Measuring

1st Grade Math »
Unit: Non Standard Measuring

### Pumpkin Patch Math

1st Grade Math »
Unit: Creating a Culture of Math

1st Grade Math »
Unit: Creating a Culture of Math

Big Idea:

#### Blending is not just for ELA teachers! Today students will learn to "blend" (combine) two sets of dots and then compare the number to another using greater than by playing versions of previous learned activities.

Favorites
(3)

Resources
(17)

Reflections
(1)

Common Core Math

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### HS Number & Quantity

### HS Algebra

### HS Functions

### HS Geometry

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### Eighth Grade

### Ninth and Tenth Grade

### Kindergarten

### First grade

### Second grade

### Third Grade

### Fourth grade

### Fifth grade

### Middle School

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

HS Number & Quantity

HS Algebra

HS Functions

HS Geometry

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Ninth and Tenth Grade

Kindergarten

First grade

Second grade

Third Grade

Fourth grade

Fifth grade

Middle School