The axes divide the coordinate

plane into 4 ___________.

The lines are called _______.

The horizontal axis is the _______________.

The vertical axis is the _____________________.

The point where the x-axis and y-axis intersect, ( , ), is called the _______.

coordinate system

axes

quadrants

x-axis

y-axis

I

II

III

IV

y-axis

x-axis

0 0

I

II

III

IV

y-axis

x-axis

(0, 0)

origin

origin

The first number of an ordered pair

I

II

III

IV

y-axis

x-axis

Moving up or to the right on the coordinate plane is _______.

Moving down or to the left on the coordinate plane is ________.

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

-4

-3

-2

-1

4

3

2

1

0

positive

negative

ordered pair

left

right

origin

(2, 1)

The second number of an ordered pair

I

II

III

IV

y-axis

x-axis

up

down

An ___________ is a pair of numbers that tell

you where on the coordinate plane a specific

point is located.

(2, 1)

tells how

far to move _____ or _____ from the _____.

tells how

far to move ____ or _____ from the origin.

What are the coordinates

for this point?

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

4

3

2

1

-4

-3

-2

-1

0

.

What are the coordinates

for this point?

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

4

3

2

1

-4

-3

-2

-1

0

.

How about this one?

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

4

3

2

1

-4

-3

-2

-1

0

.

And this one?

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

4

3

2

1

-4

-3

-2

-1

0

.

Here's another . . .

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

4

3

2

1

-4

-3

-2

-1

0

.

and another . . .

I

II

III

IV

0 1 2 3 4

-4 -3 -2 -1

4

3

2

1

-4

-3

-2

-1

0

.

Let's practice!

You will see a blank coordinate grid on the paper you received earlier. Use it to plot the following coordinates.

**(4, 0)**

**(4, 1)**

**(4, 2)**

**(3, 3)**

**(2, 4)**

As we plot each point, we will connect them to form a hidden picture.

**(1, 4)**

**(0, 4)**

**(-1, 4)**

**(-2, 3)**

**(-3, 2)**

**(-3, 1)**

**(-3, 0)**

**(-3, -1)**

**(-2, -2)**

**(-1, -3)**

**(0, -3)**

**(1, -3)**

**(2, -3)**

**(3, -2)**

**(4, -1)**

**(4, 0)**

**This Line Ends**

**(0, 1)**

**(0, 2)**

**(-1, 2)**

**(-1, 1)**

**(0, 1)**

Shade-in the enclosed space, and then start a new line beginning with the next point.

**(1, 1)**

**(1, 2)**

**(2, 2)**

**(2, 1)**

**(1, 1)**

**(-1, 0)**

**(0, -1)**

**(1, -1)**

**(2, 0)**

**Guess that'll do it for today!!**

**Introduction**

to the

Coordinate System

to the

Coordinate System

Introduction

to the what?!?

You know . . .

the Coordinate System.

The Coordinate System was invented by Rene Descartes,

a man who lived in the 1600s.

**As the story goes . . .**

Descartes was lying in bed one morning when he noticed a fly crawling on the ceiling.

Being the great thinker that he was, Descartes wondered how he could describe the fly's position on the ceiling to another person.

After some thought, Descartes realized that he could pinpoint the fly's

location by describing

its distance from two

intersecting walls.

Descartes soon recognized that he could locate any point on a flat surface using the same method.

Presto!

The Coordinate System was born!

Whether or not the story is true, Descartes is credited with inventing a system that is widely used today.

Sometimes called the Cartesian Coordinate System in Descartes' honor,

**the coordinate system is used in many, many ways.**

From space technology . . .

to video game development . . .

navigation . . .

roller coaster design . . .

and much, much more . . .

The

Coordinate System

is essential.

Since it's so important . . .

what do you say we learn something about it?

medical technology . . .

**Don't you agree that this was a great . . .**

Please complete the notes that you were given earlier as we proceed through this lesson.

Remember that when plotting a point on the coordinate grid, you always count left or right before you count up or down.

Start a new line beginning with the next point.

**This Line Ends**

Shade-in the enclosed space, and then start a new line beginning with the next point.

**This Line Ends**

© 2017 SnapCrackleTeach

Introduction

to the

Coordinate System

Introduction

to the what?!?

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