This is a 10 - 15 minutes presentation for a "Schlüsselqualifikation" (Das ist eine gute Frage - Umfragedesign) at KIT. You can download it here.
It will be at Thursday, the 10. January 2015 at 10:00 in building 30.91 (ehemalige Kinderklinik) in Raum 016.
See documents/survey-mathematische-formeln for the survery.
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Please take a look at the presentation "Tutorenschulung" for further information.