Nowadays, pupils can find numerous explanatory videos on the World Wide Web on a wide variety of school subjects. These sometimes offer useful explanatory approaches and can thus supplement subject lessons as an informal learning resource. However, only a few videos meet basic media, language and subject didactic quality criteria.
The joint project MuM-Video aims to demonstrate the potential of high-quality, interactive explanatory videos and to make them usable for subject- and language-integrated teaching as well as for the professionalisation of teachers.

The project will be implemented on three levels: At the media level, interactive, subject- and language-didactically optimised learning videos for secondary mathematics teaching are developed and researched. At the teaching level, concepts for integrating such videos into subject lessons will be developed. At the training level, needs for corresponding teacher training are identified and training concepts for the targeted use of explanatory videos in the classroom are developed.