On April 22, there was a small premiere at the University of Semarang, Indonesia. For the first time a lecture took place completely over the Internet and was transferred into several rooms. By invitation of Adi Nur Cahyono (MCM Educator for Indonesia), Joerg Zender gave a lecture on outdoor education in the field of mathematics didactics, introducing MathCityMap and its research findings. In general, the challenges of quantitative research have been addressed and, in particular, the open questions associated with research work have been discussed. After the approximately 90-minute presentation there was still room for questions. The participants were particularly interested in the possibilities to use MathCityMap in class. Most of the questions involved the process of organizing and organizing a mathtrail with MCM, as well as possible topics and response formats that could be used to translate mathematical questions.