STUDENT
TEACHER

QUICK LINKS


Introduction

STUDENT
TEACHER

QUICK LINKS


Introduction

Adding and Subtracting Integers


ACT 1

Sparking Curiosity

ENGAGE
β€”
1.
Prior to presenting the Act 1 video, ask students to consider the following questions as they watch:
β€œWhat do you notice? What do you wonder?”
β€œIs there anything that sticks out?”
β€œIs there anything that reminds you of something else?”
β€œWhat are you curious to know?”

2.
Present the Act 1 video.

3.
After presenting the Act 1 video, give students an opportunity to share their initial noticings and wonderings.

4.
Continue with the following questions:
β€œWhat do you think will be the outcome?”
β€œAre there any predictions you’d automatically rule out? Why or why not?”
β€œWhat additional information would help you make a more confident prediction?”

5.
After giving students an opportunity to share their initial predictions, proceed to Act 2.

ACT 2

Fueling Sense Making

ENGAGE
β€”
1.
Prior to presenting the Act 2 video, ask students to keep a lookout for new information that will help them refine their predictions.

2.
Present the Act 2 video.

3.
After presenting the Act 2 video, prompt students to consider the following questions:
β€œHow does this new information affect your initial prediction?”
β€œAre there any changes you’d like to make? Why or why not?”

4.
Give students time to finalize their predictions.

5.
Continue with the following questions:
β€œWhat is your final prediction?”
β€œWhat is the reasoning behind your prediction?”
β€œHow does your prediction and reasoning compare to others in the class?”

6.
After giving students an opportunity to share their final predictions, proceed to Act 3.

ACT 3

Igniting Teacher Moves

ENGAGE
β€”
1.
Prior to presenting the Act 3 video, celebrate the process! πŸ₯³
Remind students that regardless of whether or not their prediction turns out to be correct, everyone has already successfully completed the activity by putting their existing knowledge to work and engaging in critical thinking.

2.
Present the Act 3 video.

3.
After presenting the Act 3 video, take some time to validate students’ reactions.
Irrespective of whether or not their prediction is correct, students may experience a variety of emotions including, but not limited to:
Encouragement, joy, excitement
Discouragement, frustration, anxiety
Confusion, apathy, boredom
Take some time to reflect on who your students are and how you can leverage their unique personalities to guide their emotions to a place of awareness and appreciation for the learning that is taking place.
EXPLORE
β€”
EXPLAIN
β€”
ELABORATE
β€”
EVALUATE
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SUBMIT

Adding and Subtracting Integers

INTRO
β€”
When it comes to adding and subtracting integers, we like to imagine we’re digging and filling to help us keep track of when we need to go up and down the number line ↕️.
The sign or combination of signs a number comes after tells us whether we need to fill up or dig down:
Sign(s)ActionVisual
Dig down
Dig down
(Add
a hole)
Fill up
Fill up
(Take away
a hole)
Check out our
Calculator
or explore our
Lesson
and
Practice
sections to learn more about how to add and subtract integers and test your understanding.

You can also use the Quick Links menu on the left to jump to a section of your choice.

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CALCULATOR
β€”

Adding & Subtracting Integers Calculator

KEY STEPS
β€”

How to Add & Subtract Integers

Single Sign

Double Signs

Step 1. Imagine the first number.

  • If the first number is positive, we fill up to the value of the first number.
  • If the first number is negative, we dig down to the value of the first number.

Step 2. Imagine the second number.

  • If the second number comes after a plus sign, we fill up to the value of the second number.
  • If the second number comes after a minus sign, we dig down to the value of the second number.

Step 3. Combine the numbers.

Overlap the piles and/or holes. The top of the final pile lines up with the final answer.
LESSON
β€” Single Sign
PRACTICE
β€” Single Sign
LESSON
β€” Double Signs
PRACTICE
β€” Double Signs
CONCLUSION
β€”
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