Association for Mathematical Didactics
German society for mathematical didactics. Contact details, publications and links. [German, English]
http://didaktik-der-mathematik.de/

Les Editions Didier : French as Foreign Language
Editions Didier FLE : éditeur de référence pour l'enseignement des langues, méthode de langues, francais, cahier exercice, livre de l' élève, ressources pédagogiques
http://www.didierfle.com

Paderborn, University
Department of Computer Science. Research areas include databases, computer graphics, visualization, image processing, operating systems, parallel and distributed systems, programming languages and compilers, societal aspects, knowledge-based systems, didactics, and software techniques.
http://typo3.cs.uni-paderborn.de/