Video-Based Interaction (VBI) for teachers does not have any meaning without the presence of an instructor and a process of interaction. This study aimed to analyze the effectiveness of VBI in Teacher Working Group (TWG) forums to improve teachers’ professionalism in science learning in elementary schools. This study involved 36 teachers in rural and city areas by using a one group pretest - posttest design. N-gain was used to analyze the effectiveness of VBI in TWG forums to improve teachers’ teaching skills. The study showed that VBI significantly increases teacher professionalism to reach professional levels. The results were also consistent with the N-gain category of teacher professionalism in planning, implementation, and relations components.

A number of authors have looked into the problems involved in finding the most appropriate and fundamental competences and capablilities of a teacher that form the basis of his/her professionalism and are becoming more and more essential for changing attitudes towards requirements in the professional preparation and practice of a teacher. This trend has become evident since the 1990s with several overriding tendencies which can be easily identified. F. Oser’s model, which has been widely recognized across Europe, has been the main inspiration for the preparation of the Slovak approach towards teacher competences. The draft of the structure of a teacher competence profile in the Slovak Republic in accordance with European trends and documents is based on the teacher’s competence profile from the interactional model of education with the following three basic dimensions: the pupil, the teacher, and the teaching process which occurs between them. This is the basis for the teacher’s competence profile and it has now become a topic of public debate.