The Content of the Lesson Plan

          The lesson plan that I have chosen give us an idea on how to plot points on a graph and how to name it. By using a graphing paper, we could actually experience how to plot points with our own hands. Also, we could name them by simply looking at the coordinates they belong. Before that, we should know first the parts of a graph.

           On a graph, there are two intersecting lines which are the x- and the y-axis. (See figure on the left)

The x-axis is the horizontal line and the y-axis is the vertical line. The center of the graph is called the origin.The two points on a graph are called coordinates. The first coordinate that lies on the horizontal line is the x-coordinate or called as abscissa and the second coordinate that lies on the vertical line is the y-coordinate or the ordinate. They can be written as (x,y) where x is the abscissa and the y is the ordinate.

        In plotting points on the graph,start from the origin in counting the distance of each points. For example, at the origin, we will count two times to the right and one count up then put a dot on the point where you stop. By this method, you have already plotted the points on a graph. In naming points on a graph, just simply state the points of your coordinates. Since your counting stops at 2 counts to the right and 1 count up, the coordinates will be at point (2,1). Since, the point 2 lies on the x-axis or horizontal line, 2 will be the abscissa while point 1 will be the ordinate. Just arrange the points so that the it will be written into the form (x,y). (See illustration on the left)

       

        There are also four quadrants on a graph. (See figure on the right) We can actually locate immediately where a point lies by just looking at their signs. On the first quadrant, remember that the signs of the coordinates are both positive. On the second quadrant, the x-coordinate(abscissa) is negative and the y-coordinate(ordinate) is positive. On the third quadrant, both coordinates are negative. On the fourth quadrant, the x-coordinate(abscissa) is positive and the y-coordinate(ordinate) is negative. For example, the coordinates (2,4) is both positive, since they are both positive, therefore, point (2,4) is on the first quadrant.

        If you want to know the figure that can be formed after you plot the points, just connect the dots with a line and you can figure it out already.