You can either download the .ggb file alone or the complete webpage for students with tasks.
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Andreas Lindner October 2, 2014 - 3:26 PM
May 10, 2016 - 12:03 PM 3 resources — andimue
May 19, 2015 - 8:22 AM 1 resources — manuelahi
October 2, 2014 - 3:36 PM 1 resources — Lindner
June 5, 2016 - 4:24 PM 11 resources — Langwieser