The scan tool in Coach software allows your students to highlight a point on a graph and view its coordinates on screen. The scan tool also jumps to the same set of coordinates (data points) in any open tables that relate in any way to the graph you are working with. It also makes the focus of any other open graphs that have a shared data set with the original graph jump to the same relative coordinates.
The scan tool is very useful for determining the coordinates of interesting points on a graph such as maximum, minimum, changes in slope, points in time when an event happened in the experiment, etc.
Note: The scan tool will give you the coordinates of the nearest data point that was actually recorded, and not necessarily the exact point on the line that your pointer is pointing at. This is particularly true when you are zoomed in by several factors on a graph.
To use the scan tool simply click on the Window Toolbox button on a graph window and choose "scan". The pointer will change to a cross hair. Then simply click on any point on the graph. The coordinates of that point will be displayed in the upper right hand corner of the graph window and any open tables will jump to the correlating data points.
Start your "scan" by choosing "Scan" from the Window Toolbox button.
Your pointer will then turn into a crosshair and coordinates appear in a box in the upper right hand corner of the window.
When you click on a point any open tables will automatically jump to the same data set. In this example a student is using the Scan Tool to make a prediction about the equivalence point in an acid base titration.
When you are finished scanning simply click on the Window Toolbox button and choose "Stop Scanning"
