Positive and Negative Numbers

Positive and Negative Numbers

Is it positive or negative?

• Positive numbers have no sign in front

• Numbers with no signs are understood to be positive

• Negative numbers have a (-) sign in front of the number.

Open Ended

How can you tell if a number is positive or negative?

Multiple Select

Check all the numbers that are negative

• 4565

• -12

• 845

• -1253

• -88751

Numbers on the Number Line

• The left side of 0 is negative

• The right side of 0 is positive

• As number increase, they move towards the right

• As numbers decrease, they move towards the left

Open Ended

How do you know if a number is increasing or decreasing on a number line?

Which number is bigger?

• Just like with positives, negative numbers are bigger and smaller than others.

• All negative numbers are smaller than positive numbers and 0

• Negative numbers are opposite in rank than positive.

• Positive numbers get bigger as they increase 1, 2, 3

• Negative number get smaller as they go from -1, -2 , -3

Multiple Choice

Which number is largest?

• 25

• -6548

• 0

• -5

Coordinate Plane

• Negative and Positive number can be plotted on a number line AND a coordinate plane.

• A coordinate plane has a vertical number line and a horizontal number line that meet at the origin or (0,0)

Watch the Links on Coordinates and the Coordinate Plane

https://www.khanacademy.org/math/cc-fifth-grade-math/imp-geometry-3/imp-intro-to-the-coordinate-plane/v/introduction-to-the-coordinate-plane

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-negative-number-topic/cc-6th-coordinate-plane/v/the-coordinate-plane

Multiple Choice

Which quadrant would (1,1) be plotted in?

• 1

• 2

• 3

• 4

Multiple Choice

Which quadrant is (-2, 3) plotted in?

• 1

• 2

• 3

• 4

Open Ended

Describe how you plot the point (-2, 5).

Open Ended

Describe how to plot (-5, -5).