This tutorial works with the same folder that you downloaded in the first tutorial. If for some reason you do not have this folder click here to download the folder Image_and_Cursor_All in the form of a zip file (248 KB). Then unzip it (this may happen automatically) and place the folder in a convenient place. Your work in this tutorial must take place within this folder.
As a first step, try the module in the new window. There are various ways that students might solve the problem posed in this module depending on where it is used in the curriculum. For example, this module might be used when students are learning about fitting quadratic functions to data. If you want to see how this module works without doing the work, enter the answers below into the appropriate places in the new Web page and click the Try it!! button. These answers were obtained by marking a series of points along the curve of the water; cutting-and-pasting their coordinates into a spreadsheet; and then fitting a quadratic function to this data.
Now look for the following block of code.
This applet is much more powerful and flexible than we have seen in these tutorials. The User's Manual (1.1 MB) describes all of its features.