Coordinates

At the end of this activity, students should be able to:
place numbers in their correct places on the number line
- understand the coordinates of points on the plane
- place points with given coordinates in the correct places on the plane
- find equations of horizontal and vertical lines on the plane
- understand what the coordinates of a point in 3-dimensional space mean
- find equations of planes parallel to the planes x = 0, y = 0 and z = 0.