You can either download the .ggb file alone or the complete webpage for students with tasks.
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Andreas Lindner January 14, 2015 - 8:39 AM
May 15, 2019 - 6:37 AM 39 resources — mgje
December 13, 2018 - 8:24 AM 41 resources — Lindner
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April 19, 2021 - 5:16 AM 17 resources — rutzinger@web.de