Practise mathematics online - the new site of Mathefritz

Imprint - Disclaimer

Information according to § 5 TMG

Mathefritz Media
Jörg Christmann
Pfaffenkopfstr. 21e
66125 Saarbrücken

VAT ID No. DE 257385534

Phone +49 (0) 68 97 - 500 9490 (no telephone support!)

Fax: +49 (0) 681 9489 9007

In case of any questions, please write us an e-mail!

E-mail contact (a)

EU Dispute Resolution
The European Commission provides a platform for online dispute resolution (OS):
You can find our email address in the imprint above.

Consumer dispute resolution/universal arbitration body
We are not willing or obliged to participate in dispute resolution proceedings before a consumer arbitration body.

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The content of these pages has been carefully edited and checked. However, Mathefritz Media Jörg Christmann does not guarantee the accuracy and completeness of the information provided. Liability claims against Mathefritz Media Jörg Christmann, which refer to damage, which was caused by the use of the presented information or by incorrect or incomplete information, are in principle impossible, if on the part of no as can be prove deliberate or roughly negligent being to blame for is present and no requirements from injury of the life, the body or the health are concerned.


Trademark rights, copyrights and other protective rights

All brand names and trademarks mentioned on the website and, if applicable, protected by third parties are subject without restriction to the provisions of the applicable trademark law and the rights of the respective owners.

The copyright for the own contents under the domain as well as on it linked domains is entitled only to Mathefritz Media, Jörg Christmann. A use of the works, in particular a duplication in other electronic or printed publications is not permitted without express agreement of Mathefritz Media Jörg Christmann.

Use of the works for private use and as exercise material in school classes is permitted.

Use and duplication in tutoring institutes and by commercial educational institutions is not permitted. Companies can purchase a company license.



According to §§ 8 - 10 Telemediengesetz (TMG) Mathefritz Media as a service provider is not obligated to monitor the information transmitted or stored by him or to investigate circumstances that indicate illegal activity. Obligations to remove or block the use of information according to the general laws remain unaffected. Illegal information will be removed immediately upon becoming known.

Photo credits

The following list contains the authors of the images used on this site. 3d figures, watches / Adobe Stock:
© WavebreakMediaMicro adobe stock
© Barbara Helgason -
© Digitalpress -
© Emilia Stasiak -
© Eric Isselée -
© EtiAmmos -
© evangelo66 -
© Fotographix -
© fotomaedchen -
© Geoffrey Whiting -
© Glenda Powers -
© godfer -
© Irina Fischer -
© Jamie Wilson -
© jeff Metzger -
© Jose Ignacio Soto -
© JuliSonne -
© -
© Marzanna Syncerz -
© mekcar -
© Michael Flippo -
© objectsforall -
© Penny -
© Perrush -
© Peter Cox -
© Rick Sargeant -
© RTimages -
© SC-Photo -
© sumnersgraphicsinc -
© Taiga -
© Thaut Images -
© utemov -
© Vladimir Melnikov -
© Volodymyr Kyrylyuk -
© Witold Krasowski -
© womue -
© Yuri Arcurs -