#### Addition and Subtraction

How to use:

- Watch and ask: What do you notice? What do you wonder?
- Ask: What is addition? What is subtraction? How are they the same? How are they different?

#### Adding 2 Digit Numbers (42 + 35)

How to use:

- Watch and ask: What do you notice? What do you wonder?
- Watch the visual on the bottom, then replay and watch the equation on the top. Ask: How do they show the same thing?
- Ask: How does the number bond work in this problem?
- Watch the second video (with notes) and ask: How could you show your work on a problem like 25 + 32?

#### Make 10 by Filling the Tens Frame

How to use: Ask: What do you notice? What do you wonder? Why did it take 3 from the 5? Could you use this strategy for 8+7? How do the number bonds work? How can you show make 10 with an equation?

How to use: Ask: What do you notice? What do you wonder? Why did it take 2 from the 6? Could you use this strategy for 9+5?

#### Making a Ten 7+8 and 27+8

#### Parts and Whole with 5 plus 2

How to use: Ask: What do you notice? What do you wonder? What would this look like with other numbers, like 3 and 6? Can you draw it or act it out with cubes?

#### Parts and Whole with Number Bonds and Equations

How to use: Ask: What do you notice? What do you wonder? What would this look like with the parts 5 and 3? Can you draw it?

#### Same and Different: Number Bonds

#### Same and Different: Adding with Ones and Adding with Tens

#### Counting On: How many now?

#### Count On and Count Back (No Numbers or Sound)

#### Count On and Count Back (Regular Version)

How to use:

- Watch and ask: What do you notice? What do you wonder?
- No Numbers or Sound Version: What problem is he solving? How do you know? What equation would match?
- Regular Version: How does count on/back work? What are the parts and whole and how do you know? What other problems could you solve using one of these strategies?

#### Related Addition and Subtraction

How to use:

- Watch and ask: What do you notice? What do you wonder? What is the same? Different
- Ask: What is addition? What is subtraction? How are they the same? How are they different?

#### Combinations of 10

#### Story Problem Equations: Missing Part

#### Open Number Line: Solve 52-28 Version A

#### Make 10

How to use:

- Watch and ask: What do you notice? What do you wonder? and What is the same? What is different?

#### Make 10 with 3 Addends

#### Make 10 Mountain

#### Equal or Not?

#### Difference Between 13 and 16, with Equations

Download the PDF printout here: Double Number Path Printout

#### Doubles, Doubles Minus 1

How to use: Ask: What do you notice? What do you wonder? Can you figure out what 8+9 is, based on what you noticed with 8+8 and 8+7? What other equations would this work for?

#### What Equations Match?

How to use: Watch all of the options (on the left), then pause and ask: What matches? How do you know? Then ask for other equations that could match these pictures.

#### Many Ways to See a Number

#### 4+3 using Count All and Count On

How to use:

- Watch and ask: What do you notice? What do you wonder? and What is the same? What is different?

#### Compensation with 37+29

#### 2 Digit Addition (with Commutative, Associative Properties)

#### 2 Digit Addition with Regrouping (and Commutative, Associative Properties)

#### Decomposing to Subtract 21-7

#### Decomposing to Subtract 35-8

#### Commutative Property

How to use:

- Watch and ask: What do you notice? What do you wonder?

#### Associative Property

How to use:

- Watch and ask: What do you notice? What do you wonder?

#### Combinations of 8

How to use:

- Watch and ask: What do you notice? What do you wonder?

Thank you to all of the collaborators on Twitter and email who shared ideas and feedback for these visuals.