Download The Coordinate Grid Lesson Plan

The Coordinate Grid
Lesson Plan
Background Information
Objectives
At the end of the coordinate grid
lesson, students will be able to:
• Identify x- and y-axes, point of
origin, quadrants, coordinates,
and ordered pairs.
• Read, interpret, and plot points
in any of the quadrants.
A coordinate grid is a way to identify or describe any point on a flat surface, or
plane, using a horizontal number line, the x-axes, with both positive and negative
numbers, and a vertical number line, the y-axis. These axes form four quadrants,
or sections; the number lines intersect at right angles at zero on both lines, the
point of origin. Every point on the plane can be described this way, as coordinates
or ordered pairs. The x-axis position is always stated first followed by a comma,
then the y-axis, (x,y).
This lesson should take approximately 1 hour and 15 minutes to complete, if all
components are utilized.
Video
Introduce the video by asking students how they might identify one point on a map or
a two-dimensional image, like a graph. Suggest to the students “As you watch the video,
pay attention to how to plot positive and negative coordinates.”
Show the video Positive and Negative Coordinates.
After watching the video, focus on these points:
• The axes intersect at right angles at the point of origin (0,0).
• The value of “x” (or the point on the x-axis) is named first followed by a comma then the value of the “y” (or the point on the y-axis).
• Each quadrant contains the same pattern of values; Q1 (+,+), Q2 (-,+), Q3 (-,-),
Q4 (+,-).
The coordinate grid will also be used to answer one type of alternative format question on the GED® test. These videos explain how to use the coordinate grid to answer
alternative format questions.
Show the videos Using the Coordinate Grid and Alternate Format Gridding.
After watching the videos, focus on these points:
• The coordinate grid is used to answer some questions on the GED® test.
• The student must identify points when given the coordinate pair.
• The student must describe any point in terms of coordinate pairs.
Coordinate Grid • 1
Funded by Kentucky Adult Education
Worksheets/Practice
This worksheet packet provides practice and reinforces concepts presented in the video
segments.
The pages are from the GED Connection Mathematics workbook.
p. 21, GED Practice
p. 22 GED Practice
p. 283 Skill Practice
p. 292, problem 3
p. 295, problem 21 and 22
Online Activities
Practice Coordinate Geometry by playing a Jeopardy game online.
For more resources and an overview of the 2002 GED® test, click
www.gedmathstrategies.com.
Test Tip:
• Look for the pattern of the ordered pairs to identify the quadrant of the point described.
GED® and GED Testing Service® are registered trademarks of the American Council on Education. Used under license.
2 • Coordinate Grid
Funded by Kentucky Adult Education