Use of materials.. is it allowed?

Hey there :slightly_smiling_face:
I am a teacher of english focusing on e-learning and I just found your courses pretty interesting, therefore I would like to ask if I can actually create few courses consisting of vocabulary from my lectures and recommend my students to use those materials in their free time as a revision. Of course I would not charge anything for this quizzes It is just a helpful tool along the learning. If this is no possible can you give me a hint regarding similar quizzes or courses which could be used for the same purpose?
Thanks in advance.
Robin.

Probably depends on the source you are using. There has been some discussion (see below), but it probably depends on the country you are in and the laws applied there. The suggestion to ask the publisher for permission seems to work sometimes (2nd link).

Some threads:
http://community.memrise.com/t/legal-issues-copyrighted-material-in-general/5792;
http://community.memrise.com/t/legal-issues-copyrighted-material-germany/5791;

Thanks, please and any idea how to contact a publisher from czech republic or at least someone responsible I can discuss it with? I cant find any, thank you.

Maybe I did not quite understand your first question. I thought you wanted to use books (material you use at your school - there should be a publisher named). If you are talking about using, mixing etc. material you solely found on memrise that should not be a problem.