Identifying Parts of a Coordinate Plane

At the end of this lesson,

you will be able to:

• identify and graph points with rational coordinates on the coordinate plane.

Grade 6 T. Noha Barada

​L2.4 Represent Rational Numbers on the Coordinate Plane

​

Multiple Select

What number is positioned at point D?

Choose all that apply

• -5 .25

• -5 1/4

• -5.5

• -5 1/2

• -6 3/4

Fill in the Blanks

Reorder

Order these rational numbers from least to greatest.

• -3.25

• -2 1/2

• -0.25

• 1.25

• 3.8

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Fill in the Blanks

Fill in the Blanks

Reorder

Order the numbers from least to greatest.

• $$\left|-3\right|$$  

• $$\left|6.25\right|$$  

• $$\left|-9\right|$$  

• $$\left|12\frac{1}{4}\right|$$  

• $$\left|-35\right|$$  

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Open Ended

Google Search

What is a coordinate plane?

Look at pictures to see how it looks like.

Open Ended

Google Search

Who developed the coordinate plane?

Multiple Choice

How many axes does a coordinate plane have?

• 2 axes

• 3 axes

• 4 axes

• 6 axes

Fill in the Blanks

Fill in the Blanks

Multiple Choice

Where do you find the negative numbers on

the x-axis?

• to the left side of the origin (zero)

• to the right side of the origin (zero)

• above the origin (zero)

• below / under the origin (zero)

Multiple Choice

Where do you find the negative numbers on

the y-axis?

• to the left side of the origin (zero)

• to the right side of the origin (zero)

• above the origin (zero)

• below / under the origin (zero)

​A coordinate plane is a 2D plane (grid) which is formed by the intersection of two perpendicular lines known as the x-axis and y-axis.

​G6 T. Noha Barada

​What is a coordinate plane?

​

​The coordinate plane was developed by a French philosopher & mathematician, Rene Descartes in 1637 to help pinpoint areas on maps and on architectural prints.

​G6 T. Noha Barada

​• x-axis - the horizontal number line of the coordinate plane.

​

• y-axis - the vertical number line of the coordinate plane.

​G6 T. Noha Barada

Fill in the Blanks

Multiple Choice

Which quadrant has both coordinates positive?

• Quadrant $$I$$  

• Quadrant $$II$$  

• Quadrant $$III$$  

• Quadrant $$VI$$  

Multiple Choice

Which quadrant has both coordinates negative?

• Quadrant $$I$$  

• Quadrant $$II$$  

• Quadrant $$III$$  

• Quadrant $$VI$$  

​• Quadrants - the four regions of a coordinate plane numbered:

I, II, III, and IV

​

• Origin - the point at which the x-axis and y-axis intersect or cross.

Point (0,0)​

​

​G6 T. Noha Barada

​We graph points on the coordinate plane using an ordered pair of numbers called coordinates.

Coordinates ALWAYS come in the order: (x, y)

​

​

​G6 T. Noha Barada

​The first number is the x-coordinate. It tells the distance from the origin along the x-axis.

​

The second number is the y-coordinate. It tells the distance from the origin up along the y-axis.

​

​G6 T. Noha Barada

Open Ended

What would happen if the coordinates were not in the proper order?

​What STEPS to follow to locate or graph a point on the coordinate plane?

Let's find out!​

Open Ended

What steps to follow to locate or graph point on the coordinate plane?

(There are three steps / Number them please!)

​1- We ALWAYS start at the ORIGIN.

2- We move RIGHT or LEFT on the X-AXIS to find the X-COORDINATE.

3- We move UP or DOWN on the Y-AXIS to find the Y-COORDINATE.

​

​G6 T. Noha Barada

​To locate and graph points on the coordinate plane,

we follow these steps:

​

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