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Have students use Internet search tools to locate reputable online resources to back their claims. They catalog, comment on, and annotate sources of evidence using social bookmarking tools like Diigo or Delicious. Next, students share the sources with their classmates to determine the legitimacy of the evidence, the extent to which it is weakened by erroneous reasoning, or to provide ideas or additional resources for further consideration. Encourage students to add comments by annotating sources of information directly in the social bookmarking site.
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Sonny Magana (Enhancing the Art & Science of Teaching With Technology (Classroom Strategies))