Integer Operations 2

Objective: Today you will select and use appropriate operations to solve problems and justify solutions with integers.


Vocabulary: integer, positive, negative, opposite, zero pairs or canceling


You will learn integer operations and solve problems.

After the lesson you will be able to say "I Know": 
1. The multiple meanings of the subtraction sign, including "opposite of?"
2. How to use integer chips or a number line to find the solution to an integer subtraction problem.
3. How to use a vertical number line (thermometer) to find integer differences in problem situations?


Watch this video first
Brain Pop


In stations you will work on problems at the following web sites:
Integer Number Line
Integer Number Line #2
Closure: Describe how you use a number line to find the solution to an integer subtraction problem


Integer Chips
Integer Chips #2
Closure: Describe how you use integer chips to find the solution to an integer subtraction problem


Differences in Temperatures on a Thermometer
Differences in Temperatures on a Thermometer
Closure: Describe how you use a thermometer to find the differences in temperatures

Discussion: When working with integers, how is subtraction like addition? When?
Write in your own words the rule for subtracting integers. Explain how to check your answer.

Extension:
In stations you will watch a video and work on problems at the following web sites: 
Adding Integers with Different Signs
Circle Zero
Number Line Bounce
Integer Operations Matching
Integer Expressions Activity
Challenge