MICRO LESSON 1
The Coordinate Plane
Picture it:
Imagine a city map with one horizontal road and one vertical road crossing.
Simple:
The coordinate plane is formed by the x-axis and y-axis.
Example:
The horizontal line is x-axis; vertical is y-axis.
Quick Check:
Which axis is vertical?
MICRO LESSON 2
Origin
Picture it:
The crossing point is the starting point for all movement.
Simple:
The origin is (0,0).
Example:
No movement right/left and no movement up/down.
Quick Check:
What are the coordinates of origin?
MICRO LESSON 3
Ordered Pair
Picture it:
Directions must be followed in order: first horizontal, then vertical.
Simple:
A point is written as (x,y).
Example:
(3,2) means 3 right and 2 up.
Quick Check:
In (5,-2), what is y?
MICRO LESSON 4
Quadrants
Picture it:
The axes divide the plane into four rooms.
Simple:
The four regions are quadrants I, II, III and IV.
Example:
Quadrant I has positive x and positive y.
Quick Check:
Where is (-3,4)?
MICRO LESSON 5
Signs in Each Quadrant
Picture it:
The sign pattern changes as we move around the plane.
Simple:
QI (+,+), QII (-,+), QIII (-,-), QIV (+,-).
Example:
(2,-5) lies in QIV.
Quick Check:
Which quadrant contains (-2,-3)?
MICRO LESSON 6
Points on Axes
Picture it:
A point on an axis has zero distance from the other axis.
Simple:
On x-axis, y=0. On y-axis, x=0.
Example:
(4,0) lies on x-axis.
Quick Check:
Where does (0,-6) lie?
MICRO LESSON 7
Plotting a Point
Picture it:
Move from origin horizontally first, then vertically.
Simple:
Follow x, then y.
Example:
Plot (-2,3): move 2 left and 3 up.
Quick Check:
How do you plot (3,-4)?
MICRO LESSON 8
Reading a Graph
Picture it:
A graph tells a story through positions.
Simple:
Read the horizontal and vertical distances from origin.
Example:
A point 2 left and 5 down is (-2,-5).
Quick Check:
What are the signs in quadrant II?