Coordinate Planes

1. Coordinate Plane

2. Quadrants

3. X-axis

4. Y-axis

5. Origin

6. Coordinates

7. Roman Numerals

*Students read defs. then provide visual example in photo

Vocabulary

• A coordinate plane is like a map. It helps us find places using numbers.

• Imagine two number lines that cross each other.

  • One horizontal line (x-axis)

  • One vertical line (y-axis)

• The place where those axis cross is the origin (0,0)

*Label on image, wall/floor comparison, visual cues

(quad)rants = 4 sections

• The quadrants go in a counter-clockwise direction.

• Start in top right, goes to top left, then bottom left and ends in bottom right.

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• To find a point on the plane, we use two numbers called coordinates.

• The coordinates are written as (x, y).

• The x number move right or left from the origin.

• The y number move up or down from the origin.

• You move the to the x-axis then y-axis and place a mark where those lines cross

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How to locate and plot points?

Summary of Coordinate Planes

• A coordinate plane is like a map that uses two number lines, x and y, to find places.

• The plane is split into four sections called quadrants, numbered I to IV.

• Coordinates (x, y) tell us how far to move right/left and up/down to find a point.