Understanding the connection between coordinates and straight lines. Some of these activities require the student to drag points to required positions and observe the resultant coordinates. Other activities present the student with a specific problem to solve. The task is given along with a starting point and some "buttons" with which to make constructions.

How to find values from a given equation that can be used to plot a straight line graph. How to put these values in the form of a table.

All about the geometry of the straight line. Plotting straight lines when given in the form y=mx+c. The geometric meaning of m and c, m being the gradient of the line and c being the "y intercept". Many tasks here use "sliders" to affect the shape and position of the graphs. Some activities require the student to figure out the equations of the line displayed.

Using a straight line graph to solve problems. Finding particular points on a line or where the line crosses the axes. Solving simultaneous linear equations by graphical methods - finding where two straight lines intersect. Most of these activities require the student to drag points to required positions and observe the resultant coordinates.