You can either download the .ggb file alone or the complete webpage for students with tasks.
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gerhardmb — November 22, 2011 - 8:15 AM
October 23, 2014 - 9:57 PM 17 resources — Langwieser
February 13, 2018 - 10:19 PM 23 resources — Thomas Weber
May 24, 2014 - 7:09 AM 34 resources — Thomas Weber
