Due to the situation regarding the coronavirus pandemic, we have decided to implement this year's Technology Didactics Symposium 2020 virtually and at the same time make up for the planned attendance event from 17 to 19 November 2021 at the TUM Akademiezentrum Raitenhaslach. This year, the symposium will be presented as an asynchronous and thus temporally and spatially flexible information format with interesting and current lectures. The lectures and posters will be made available in the form of a video (commentary on presentation slides) on-demand as a stream. Each stream will be supplemented by the possibility of a forum, through which the participants will be able to have an initial exchange with the authors. Based on this, a scientific exchange can be initiated in further steps.