The tool of the web links allows students to reinforce their learning from the classroom and also pursue topics in more depth. The absent students can also make up their work from the web links. At the moment, I have even added bonus questions to test the students' ability to absorb classroom and text material. Computers and the Internet represent tools to enhance the learning experience, not the final product. Internetting for biologists I teach Internetting for Biologists and Others for univeristy credit totally via Internet.
Students are primarily in Minnesota.
We have an additional 6-12 states covered plus have students in the Antarctic. I have been teaching the class for almost 2 years. There are currently about 120 students in the class. A student may enter whenever they wish and leave when done, up to 12 months later. Students have ranged in age from high school sophs to retirees.