Addition, Subtraction

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.