Änderungen

<bibtex>

<bibtex>

@article{MATHEDUC.05791146,

@book{RicKor-CIG-2000,

Author = {Moser Opitz, Elisabeth},

Address = {Stuttgart},

Journal = {Journal f\"ur Mathematik-Didaktik}, Number = {3/4},

Author = {Richter-Gebert, J{\"u}rgen and Kortenkamp, Ulrich},

Pages = {181-205},

Date-Modified = {2011-01-28 10:02:14 +0100},

Title = {"I just love it to juggle with numbers and fractions.'' Explanation patterns on the attitude towards mathematics in grades 5 and 8. (``Ich liebe es einfach, mit Zahlen und Br\"uchen zu jonglieren''. Begr\"undungsmuster zur Einstellung zum Fach Mathematik in Klasse 5 und 8.)},

Keywords = {software},

Volume = {30},

Owner = {kortenka},

Year = {2009}}

Publisher = {HEUREKA-Klett Softwareverlag},

Series = {Clever lernen -- super Noten!},

Title = {Cinderella -- die interaktive {G}eometriesoftware},

Url = {http://cinderella.de},

Year = {2000},

Bdsk-Url-1 = {http://cinderella.de}}

</bibtex>

</bibtex>

[[Jürgen Richter-Gebert]], [[Ulrich Kortenkamp]]. 1999. The Interactive Geometry Software Cinderella. Heidelberg: Springer-Verlag.

[[Jürgen Richter-Gebert]], [[Ulrich Kortenkamp]]. 1999. The Interactive Geometry Software Cinderella. Heidelberg: Springer-Verlag.

== Test Umlaute ==

== Test Umlaute ==