Students will be able to identify the parts of a coordinate grid and correctly graph an ordered pair on a grid.

1. Instructional Objectives By the end of today’s lesson you will be able to identify the parts of a coordinate grid and correctly graph an ordered pair on a grid.

2. X- AXIS A coordinate grid has two perpendicular lines, or axis, labeled like number lines. The x-axis is the horizontal axis.

3. Y-AXIS The y-axis is the vertical axis.

4. Origin The point where the x-axis and y-axis intersect is called the origin.

5. Ordered Pair The numbers on a coordinate grid are used to locate points. These points are identified by an ordered pair of numbers. A number that is on the x-axis is called an x-coordinate. A number that is on the y-axis is called a y-coordinate. Ordered pairs are written like this: (x-coordinate, y-coordinate). The ordered pair for the origin is (0,0).

6. Graphing an Ordered Pair The order in which you write the ordered pair is important. The x-coordinate must come first. This shows how far over (to the right) you have to move on the x-axis. In the example, you can see a move over to the right 2 marks. The y-coordinate comes next. This number shows how far up you have to move on the y-axis.

7. Plotting Points Soon you are going to plot and label points on an empty coordinate grid. When you plot, you need to start at the point of origin and move overthe on the x-axis and move up from that point to mark your point

8. Plotting Points See the example for Point A = (6, 4) that has been plotted and labeled on the coordinate grid below. You can see that since the x-coordinate is 6, you move over 6 spaces to the right. Since the y-coordinate is 4, you move up 4 spaces. Then, put a dot and a label of the point.

9. Practice Plot the following points and label them with the ordered pair next to the point. (9,4) (2,3) (8,0) (2,10) (0,5) (8,8) (5,2)