Key Graphs are provided as a learning aid. They make many of the graphs in the textbook come to life. To use the Key Graphs, you
will need a JavaScript compatiable browser (recent versions of Netscape Navigator and Microsoft's Internet Explorer are JavaScript compatible).
When you load a page within a Key Graph module, you may find that it takes a minute to load the entire page. Be patient. Wait until the entire page
loads before trying to use the page. You will find it easier to use the Key Graphs on computers which have faster connections to the Internet.
You can use the Key Graph modules in one of two ways: (1) You can work through the module from start to finish by clicking on the bold Key Graph titles.
(2) You can view individual pages within the module by clicking on the page titles below the bold Key Graph titles.