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But just as Moore's Law hits physical constraints, network effects have a limit in many types of online communities. Indeed, in some cases, a reverse network effect may exist: as new people join, others are motivated to leave.

Since SDSU's clicker standardization, clicker course enrollment has grown from under 3,000 in fall 2006 to over 12,500 in fall 2008. Learn about SDSU's collaborative approach to standardization and its innovative faculty support program, which combines a faculty community of practice developed through online and in-person peer interactions with hands-on workshops and one-on-one support. With its focus on improving student engagement and learning through effective practices with clickers, the impacts of this effort will be demonstrated through analysis of feedback data gathered each semester from thousands of students.

"You can teach in order to have it be effective years later," Ms. Metcalfe says, "or you can teach so that they get their A on the final exam and then they forget it all."

The only way for all of us to deal with the current challenge to our particular approach to learning - aside from ignoring it completely, which is about as effective as ignoring an oncoming truck - is to seize the wheel and create our own learning network.

The Open Source Portfolio (OSP) software for eportfolio learning and assessment has seen widespread adoption over the last five years. This article surveys the current state of OSP development and use and shares results of research on its effectiveness, conducted through the Inter/National Coalition for Electronic Portfolio Research.

For A Farewell to Arms, we started with a lottery. Everyone chose a name of a junior and selected a second junior to follow. Besides choosing a quote to reflect on, students also read and commented on two classmates' blogs. The first effect: students talked about blogs during class, their own and their classmates'.

Instructors' extra time and effort aren't being rewarded financially or professionally, and what's more, online education doesn't translate into better learning outcomes, said respondents in the faculty survey.