Post on 23-Dec-2015
Graph Ordered Pairs
By Mr. Bales
Objective By the end of this lesson, you will be able
to graph ordered pairs and find the lengths of line segments on a coordinate grid.
Standard 4MG2.2 - Students will understand that the length of a horizontal line segment equals the difference of the x-coordinates.
Standard 4MG2.3 - Students will understand that the length of a horizontal line segment equals the difference of the y-coordinates.
Introduce On your desk you have a coordinate grid.
Watching me, let’s place a star on the grid?
What ordered pair names the location of the star?
(3, 5) Place a dot at (6, 5) Move from point (3, 5) to (6, 5). How did
you get there? Place a dot at (6, 2) Move from (6, 5) to (6, 2). How did you get
there?
Mallory and Nicole
Mallory and Nicole are on a treasure hunt. What ordered pair gives the location of the treasure?
0
10
9
8
7
4
1
3
2
6
5
1 2 3 4 5 6 7 8 9 10
• Graph point B at (-3, 4)
• Start at (0,0)
• Move 3 units to the left.
• Then, move up 4 units.
• Graph point B at (-3, 4)
1 2 3 4-1-2-1
-4 -3
-3
-4
-2
3
2
1
4
0
B
Let’s watch Mrs. Veraghese do this problem!!
Find the length of the line segment between each set of ordered pairs.
1 2 3 4-1-2
-1
-4 -3
-3
-4
-2
3
2
1
4
0
(-1, 4)
(-1, 2)
•The line segment is vertical.
•Subtract the y-coordinates
•4-2 = 2
•The length is 2 units.
Find the length of the line segment between each set of ordered pairs.
(1, -3) (4, -3)
•The line segment is horizontal.
•Subtract the x-coordinates
•4-1 = 3
•The length is 3 units.
1 2 3 4-1-2-1
-4 -3
-3
-4
-2
3
2
1
4
0
Bales Bucks
Find the length of the line segment between each set of ordered pairs.
(4, 7), (4, 12) (4, -2), (6, -2) (5, -12), (5, 0) (-4, 8), (-4, 17)
Assignment
Page 478 - #’s 6 - 18 Get them all correct - No Math
Homework