Grids and Coordinates

Summary
This lesson introduces the first quadrant of the coordinate plane. Activity A gives the children practice in plotting a point on the grid, using given coordinates. Activity B provides an exercise in naming the coordinates of a point.

Objectives
• The children will be able to name the coordinates of a point on a coordinate grid;

• The children will be able to plot a point on the grid when given the coordinates.

Suggested Grades
3rd Grade
4th Grade

Excerpt
Take a look at the diagram. This is called a grid. or a coordinate plane. The dark lines are the number lines. They are called the axes.

? The horizontal number line is called the x-axis.
? The vertical number line is called the y-axis.
? The point where they join is called the origin.

Continued...