This research aims to determine the effect of the Research Methods Course organized according to the Layered Inquiry-Based Learning Model on students' skills, values, and attitudes. A pre-test and posttest quasi-experimental method without a control group were used in the research. The research has a mixed research feature in terms of data collection methods. The concurrent triangulation method, one of the mixed research methods, was used. The research study group was determined by the purposive sampling method. The study group consisted of 124 sophomore students studying at the Faculty of Education, Turkish Language Teaching and Elementary Education Mathematics Teaching Department in a state university in the spring semester of the 2020-2021 academic year. The course design was structured according to the Layered Inquiry-Based Learning Model. Research data were collected with the Critical Thinking Tendency Scale, Attitude Scale Towards Collaborative Learning, and Opinion Form. In the quantitative analysis, the Wilcoxon Signed Ranks Test was used for related measurements from nonparametric tests, and qualitative data were subjected to content analysis. At the end of the research, it is evident that the students gained personal and social skills, thinking skills and scientific research skills, and various values. At the end of the course, it was concluded that the students generally had positive attitudes towards the course, cooperative learning, and scientific research.