
Lesson 1.1 Integers and Their Opposites
Presentation
•
Mathematics
•
7th Grade
•
Practice Problem
•
Easy
Standards-aligned
Reed Carbone
Used 23+ times
FREE Resource
8 Slides • 4 Questions
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Lesson 1.1
Integers and Their Opposites
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Definitions:
Opposite Integers: An opposite integer is an integer that shares the same distance from 0 as its opposite.
Ex: -1 and 1 or -5 and 5 or -10000000 and 10000000
Absolute Value: The absolute value of a number is the distance that number has from 0. Note: if two numbers share the same absolute value, they will be opposite integers.
Ex: |5| = 5 or |-10| = 10
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Visual:
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Today's Goal:
Today we are going to learn to identify and use opposite integers. We will do this using number lines, counters and common sense.
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Ex: Use counters to find the opposite integer of 3.
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Multiple Choice
What is the opposite integer of 4?
0
-4
4
8
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Multiple Choice
What is the opposite integer of -6?
-5
-6
0
6
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Ex: Use a number line to find the opposite integer of -7.
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Draw
Find the opposite integer of -2 and use the number line to show this.
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Quantities combining to make zero:
Mr. Carbone has $5 in his pocket and spent $5. How much money does he have left?
Mr. Carbone is bad at keeping friends. Last year he made 4 friends and lost 4 friends. What was his net change in friends.
Class Example?
Pair and share:
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Multiple Choice
Which statement best describes a situation where quantities combine to make 0?
A scuba diver swam to a location 20 feet below sea level, then she swam 10 feet deeper.
A hot air balloon used propane to fly 50 feet higher, then used weights to fly 50 feet lower.
A child grew 1.5 inches taller one year, then 1.5 inches taller the next year.
A farmer mowed 4 inches off his grass one week, then it grew 7 inches the next week.
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Conclusion: Write two complete sentences about what you learned.
I learned that opposite integers share _______.
I can use tools like _____ or _____ to show opposite integers.
I know two quantities will combine to zero if they are _____.
Lesson 1.1
Integers and Their Opposites
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