The number line
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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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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 Plot these points on a number line.

  • 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! Plot these points on a number line.

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 Plot these points on a number line.

  • Integers: The set of all whole numbers and their opposites.

  • …-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5…


Vocabulary3
Vocabulary Plot these points on a number line.

  • 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! Plot these points on a number line.

  • Give the opposite of the following numbers:

  • 2

  • -9

  • -45

  • 16

  • -20


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