Warum so viele schlecht in Mathe sind
Doktor Allwissend erklärt, warum viele kein Mathe können.
Mein Adventskalender auf:
htt...
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![Flache Erde erklärt – warum es so wichtig ist! [Ergänzte Fassung]](https://sun9-75.userapi.com/1pIqltOczoMrsCIG8kqFyCrdUwrwci6DJLUfTw/i9xbEZVsLHs.jpg)
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