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Most modules include some sort of interactive exercise that forms the "heart" of the module.

In some cases you will be asked to answer some quiz questions. Other interactive exercises ask the user to play the role of an animal and make a decision about how to behavior. Still others require the user to record data and then organize the data in order to answer questions about them.

Slide-shows are often used to illustrate concepts. Check out the example below (will open in new window; Ctrl+W to close window).

Many of the exercises employ JavaScript, so if you are having problems with them, it might be that you have not enabled JavaScript in your browser.

Problems with the exercises should always be reported to the webmaster, using the link at the very bottom of each page.