THE COORDINATE PLANENovember 9, 2010

WHAT DOES THE COORDINATE PLANE LOOK LIKE? ANY THOUGHTS?

LET’S LABEL OUR OWN COORDINATE PLANE

We need to label:

• x-axis• y-axis• origin

PLANE AS NUMBER LINES?

Talk in your groups about…..

Are we able to say that the x-axis is the horizontal number line? Why or why not?

Are we able to say that the y-axis is the vertical number line? Why or why not?

The point at which the axes cross is known as the origin

ORDERED PAIRS

Consist of two numbers

The first number, a.k.a. the x-coordinate, indicates how far to the left or right the point is from the y-axis

The second number, a.k.a. the y-coordinate, indicated how far up or down the point is from the x-axis.

Ordered Pairs are written as:(x-coordinate, y-coordinate)

WRITE THE ORDERED PAIR THAT REPRESENTS THE LOCATION OF THE

ITEM

PLOT AND LABEL EACH POINT ON THE COORDINATE PLANE

A (5, 2)

B (0, 0)

C (-3, 0)

D (6, -3)

E (1, 6)

F (4, -4)

G (-2, -6)

PLOT AND LABEL EACH POINT ON THE COORDINATE PLANE

A (5, 2)

B (0, 0)

C (-3, 0)

D (6, -3)

E (1, 6)

F (4, -4)

G (-2, -6)

BATTLE SHIP

You will need…

Graph paper

Pencil

BATTLE SHIP

Let’s pair up!

Fold a sheet of graph paper in half and draw 2 coordinate planes (one grid above the fold and the other below)

Plane should be labeled from -5 to +5 on both the x and y axes

BATTLE SHIP

On the coordinate plane graph that is above the fold, plot the locations of five ships. The ships must be placed vertically or horizontally (not diagonally)

Points are as follows: Aircraft carrier -- 5 points long Battleship -- 4 points long Submarine -- 3 points long Destroyer -- 3 points long Tug-Boat -- 2 points long

YOUR GRAPH SHOULD LOOK SOMETHING LIKE THIS

BATTLE SHIP After you have plotted your ships, each person

will take turns guessing a coordinate

If your partner guesses one of the coordinates that your ship is on, you must say “HIT”

If your partner guesses one of the coordinates that your ship is not on, you must say “MISS”

Once you partner has guessed all the coordinates on one ship, that ship has “SUNK”

The player who sinks all their partners ships first wins!

BEFORE YOU GO…

Plots these points on a separate sheet of graph paper. Hint: Don’t forget to label you axes and the origin!

Plot: A (1,2) B (3,8) C (-2,8) D (-8,4) E (-5,2) F (6,-1) G (7,-6) H (-3,-5)