Primary school teachers need adequate professional knowledge and motivational orientations to qualify scientifically and technologically literate students. Previous studies have focused on the impact of coursework on (pre-service) primary teachers’ content knowledge, rather than on the development of academic self-concepts. In addition, the influence of the course format and the major field of study has not been investigated much to this date. Thus, this study examines the effects of an interdisciplinary course on pre-service primary teachers’ content knowledge and academic self-concepts in science and technology using a quasi-experimental, quantitative, pre-post-follow-up design (n = 202). Whilst no significant changes in knowledge were revealed for the baseline group not participating in the course, significant short-term and long-term cognitive gains were found for the experimental group. Biology-, chemistry-, physics- and technology-related self-concepts increased significantly when participating in the course. The results also indicate that the course format and major field of study can have an impact on the development of pre-service teachers’ professional knowledge. Regarding the development of academic self-concepts in the experimental group, it can be assumed that both the weekly and block course format are beneficial for heterogeneous learner groups consisting of pre-service teachers with different major fields of study.

Teachers’ academic self-concept is considered an important factor influencing their professional competence. Regarding primary science education, positive science (teaching) related self-concepts might encourage teachers to plan and teach ‘minds on’ experiment-based science lessons leading to deep learning processes. However, research on pre- and in-service primary teachers’ self-concepts and influencing factors, such as previous experimental experience, is scarce. Thus, this study investigates the impact of an experiment-based intervention on pre-service primary school teachers’ experiment-related self-concept and self-concepts on planning and teaching experiment-based lessons. The evaluation followed a quasi-experimental, longitudinal (pre-post) design with an experimental group of N = 158 pre-service primary teachers and a baseline group (N = 44), not attending the course. According to the results, pre-service teachers gained little to moderate experimental experience in school and studying at university. Besides, the pre-service teachers with a science major gained significantly more experimental experience than those with other majors during their time at the university. Significant, positive correlations were found between previous experimental experiences and the self-concepts examined in this study. While self-concepts did not change in the baseline group, they increased significantly in the experimental group. One reason for this could be the perception of competence, as the findings reveal positive correlations between changes in self-concepts and perceived experimental competence during the intervention. Regarding the impact of the variable ‘course format’ on reinforcing the self-concepts, participants of the intensive block format seem to have a slight advantage compared to pre-service teachers attending the traditional, weekly course format. Furthermore, the results indicate that the course is equally beneficial for pre-service teachers with and without a science major.