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Podcasters, who are as varied as bloggers, create their broadcasts from interviews, personal observations, phone calls, music snippets, or random nonsense. The most popular seem to be discussions and strange programming -- news read in rhyme while tap dancing, for instance -- that's totally unavailable in familiar forms. The secret sauce is RSS: podcasts are syndicated, meaning listeners just have to find them once, and receive them every time a broadcast is issued.

bibliography of articles on classroom response systems (CRSs). Most of the articles present some form of research on the effectiveness or impact of CRSs on student learning. The first group of articles are not discipline-specific; the later articles are grouped by discipline.