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 Blank

What number is positioned at point F?

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 Blank

What is $$\left|-12\right|$$  ?

Fill in the Blank

What is $$\left|7.5\right|$$  ?

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 Blank

What is the horizontal axis called?

Fill in the Blank

What is the vertical axis called?

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 Blank

How many parts or quadrants make the coordinate plane?

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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