The purpose of this research is to improve and evaluate a different approach to develop the lab application skills of the physics pre-service teachers in the courses of Secondary Physics Experimental Design (SPED), School Experience (SE) and Teaching Practices (TP). In this context, action research was used to achieve the purpose of the research. The research carried out with 20 pre-service physics teachers studying in the 5th grade of a Northern University in Türkiye in the academic year of 2015-2016 and 2016-2017. Physics pre-service teachers implemented micro-teaching applications for the lab applications in the SPED course, practiced applications in the schools within the SE course in the fall semester and reinforced the lab skills in the TP course in the spring semester. Implemented activities carried out the applications significantly contributed to the development of the lab methods' application skills of the physics pre-service teachers.