 ## Grade 6 Math: Coordinate Grids

### Coordinate Grids: All Four Quadrants

In an earlier lesson, students have learned to read points in the first quadrant of a coordinate grid and write the coordinates of the point.

In this lesson, students extend that knowledge by learning to read points in all four quadrants of a coordinate grid. In the problems in this lesson, students are given a coordinate grid with a point plotted in one of the four quadrants. They must write the coordinates of the point.

### Graphing Figures

In the prior lesson, students learned to write the coordinates for points plotted on a coordinate grid. In this lesson they learn to plot points on the grid by plotting the points that define simple figures.

The terms “vertex” and “vertices” are defined. Students then learn to plot the vertices of figures on the grid, including squares, rectangles, parallelograms and triangles.

In the problems in this lesson, students are given points for the vertices of a figure. They then plot the points and connect the points to draw the figure using a tool in the software.

### Measuring Lines on a Coordinate Grid

In this lesson, students learn to draw and measure the length of horizontal and vertical lines in the first quadrant of a coordinate grid.

They learn that to determine the length of a vertical line, you subtract the y coordinates of the points that define the line. To determine the length of a horizontal line, you subtract the x coordinates of the points that define the line.

In the problems in this lesson, students are given a line and the coordinates of the endpoints in the first quadrant of a coordinate grid. Form the points, they calculate and enter the length of the line.

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