Coordinate Plane

Coordinate Plane

Understand the Coordinate Plane

Opening

Understand the Coordinate Plane

Watch students in your class play the Coordinate Plane Game.

There are four quadrants on the coordinate plane.

  • Is (−2,−3) located in quadrant III?
  • Name a point in quadrant IV.

INTERACTIVE: Coordinate Plane Game

Math Mission

Opening

Name locations on the coordinate plane.

Prepare a Presentation

Work Time

Prepare a Presentation

  • Explain the strategy you used to play the game.
  • Explain how you identified points on the coordinate plane.

Challenge Problem

  • Share your strategies and play the Coordinate Plane Game again.

INTERACTIVE: Coordinate Plane Game

Make Connections

Performance Task

Ways of Thinking: Make Connections

Take notes about how to plot points on the coordinate plane and about strategies for playing the Coordinate Plane Game.

As your classmates present, ask questions such as:

  • How did you describe the location of the bones using only numbers?
  • What strategy did you use to find the bones?
  • How is your strategy different from the other strategies mentioned so far?

Name That Point

Work Time

Name That Point

Remember that ordered pairs name locations on the coordinate plane. The first coordinate tells how many units to go left or right of the origin (0,0) along the x-axis. The second coordinate tells how many units to go up or down from the origin along the y-axis. For example, the ordered pair (−2,3) means go 2 units left and 3 units up from the origin.

  • On the Coordinate Plane Plotter, choose four coordinate points so that each point lies in a different quadrant.
    • First represent each point in the form (x, y).
    • Then plot your four points on the coordinate plane.
    • Identify in which quadrant each point lies.
    • Confirm with a partner that the quadrants you identified are correct.

INTERACTIVE: Coordinate Plane Plotter

  • What does the first number of the coordinate pair name?
  • Which is the negative direction on the coordinate plane on the x -axis?
  • Which is the negative direction on the coordinate plane on the y -axis?
  • Remember that (–2, –3) is in quadrant 3.

Describe a Coordinate Plane

Formative Assessment

Summary of the Math: Describe a Coordinate Plane

Write a summary of what you leaned about coordinate planes and how to name locations on the coordinate plane.

Check your summary.

  • Do you describe what the coordinate plane is?
  • Do you explain what the different quadrants are on a coordinate plane?
  • Do you explain how to find a location on the coordinate plane using only numbers?

Reflect On Your Work

Work Time

Reflection

Write a reflection about the ideas discussed in class today. Use the sentence starter below if you find it to be helpful.

One thing I know about locating points on the coordinate plane is …