From December 8 to 9, 2025, the annual MBBI closed-door conference took place in Wies, organized in collaboration between the teacher training seminar and TUM Technikdidaktik. The aim of this subject-specific event was to provide students and trainee teachers with targeted support for their individual professional development in a block format, focusing in particular on selected topics relating to lesson development and implementation. In addition, the conference provided an opportunity for exchange with the StMUK, initial teaching experience in the context of microteaching, differentiated feedback, and insights into experiential learning approaches.