TY - INPR U1 - Preprint A1 - Claus, Stephan A1 - Decker, Eva A1 - Koschig, Robert A1 - Meier, Barbara T1 - Mathe-Üben in Studium und Abitur T2 - E-learning and Education Journal (eleed) Y1 - 2015 UR - https://eleed.campussource.de/archive/11/4131 SN - 1860-7470 SS - 1860-7470 IS - 11 ER -