Abstract
The physics of the microworld is usually viewed as a difficult part, in which it is difficult to impossible to experiment or otherwise actively involve students in teaching. The contribution describes 8 activities and experiments from this area (quantum, atomic and nuclear physics, physics of elementary particles), which were prepared as part of three diploma theses defended in this and last academic year.
The activities are prepared in such a way that the time required for their preparation is minimized for the teacher. All of them are intended for secondary school students, but half of them also have a simpler version intended for the last years of elementary school.