https://pinboard.in/u:silvertje/public/ recent bookmarks from silvertje 2012-02-21T15:32:44+00:00 http://chronicle.com/blogs/profhacker/practical-advice-for-teaching-with-twitter/26416 silvertjedigitalepraktijken assessment learning socialmedia education pedagogy teaching twitter https://pinboard.in/u:silvertje/b:9df32f1ff791/