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The Number Line. Make your Own Number Line!. Vocabulary. Positive numbers: numbers that are greater than 0. These numbers are located to the right of 0 on a number line. Positive numbers can be written with or without a plus sign. Examples: 3, +3, 5, +6. Vocabulary.

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Presentation Transcript
vocabulary
Vocabulary
  • Positive numbers: numbers that are greater than 0. These numbers are located to the right of 0 on a number line. Positive numbers can be written with or without a plus sign.
  • Examples: 3, +3, 5, +6
vocabulary1
Vocabulary
  • Negative numbers: numbers that are less than 0. These numbers are located to the left of 0 on a number line. Negative numbers must always be written with a negative (minus) sign.
  • Examples: -3, -4, -5, -10
brainstorm
Brainstorm
  • When do we use or see negative numbers?
in your notes important
In your Notes: IMPORTANT
  • The number 0 is neither positive nor negative!
questions
Questions
  • What point on the number line represents sea level?
  • Which location is closest to sea level? How do you know?
  • Is the location mentioned in the question before above or below sea level?
  • Which two locations are the same distance from sea level? Are these locations above or below sea level?
  • Which location has the least elevation? How do you know?
whiteboards
Whiteboards!

Using your paper number line to help, write a number line from -10 to 10 and plot these points on your whiteboards:

  • 5
  • -10
  • 8
  • -9
  • 6
  • -2
vocabulary2
Vocabulary
  • Integers: The set of all whole numbers and their opposites.
  • …-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5…
vocabulary3
Vocabulary
  • Opposites: Two numbers are opposites if, on a number line, they are the same distance from 0 but on different sides of 0.
  • Examples:
    • 5 and -5
    • 2.15 and -2.15
whiteboards1
Whiteboards!
  • Give the opposite of the following numbers:
  • 2
  • -9
  • -45
  • 16
  • -20
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