The cryptoportal for teachers, called "Teachers portal", offered teachers a platform on which they could publish, exchange and discuss teaching materials about information security and cryptology.
The teacher portal was discontinued due to a lack of new contributions. Many of the teaching materials can still be found here: https://bscw.schule.de/pub/bscw.cgi/159132
You can find similar content here:
- http://www.informatik-im-kontext.de/
- https://www.4teachers.de/
- https://informatik.bildung-rp.de/online-lehrbuch.html
- http://www.inf-schule.de/
- https://wiki.zum.de/wiki/Kryptographie
- http://www.zum.de/Faecher/Materialien/gebhardt/informatik/krypto/index.htm
With kind regards, the CrypTool team