Department of Elementary Education, Faculty of Education, Universitas Negeri Yogyakarta, Indonesia.
Department of Early Childhood Education, Faculty of Education, Universitas Negeri Yogyakarta, Indonesia.
Department of Elementary Education, Faculty of Education, Universitas Negeri Yogyakarta, Indonesia.
Department of Mathematics Education, Faculty of Education, Universitas Islam Negeri Sunan Kalijaga Yogyakarta, Indonesia.
Department of Elementary Education, Faculty of Education, Universitas Negeri Yogyakarta, Indonesia.
This research aims to know the effect of problem-based learning-integrated Kasongan pottery ethno-STEM on improving elementary school students’ concept mastery of science in Bantul, Yogyakarta, Indonesia, particularly in the areas of heat and heat transfer. This study employs a quantitative approach via a quasii-experimental method. The research design is a pretest-posttest nonequivalent control group design. In this case, the pretest is administered at the initial stage (when elementary school students have not yet received the treatment), whereas the posttest is administered after the students have received the treatment. The experimental class was given problem-based learning-integrated Kasongan pottery ethno-STEM. The control class was given conventional learning, such as problem-based learning. The sample in this study consists of 54 elementary school students from SD N Kasongan, Bantul, Yogyakarta, Indonesia, who are currently enrolled in science classes. Moreover, a multiple-choice concept mastery instrument was used to measure concept mastery before and after teaching about heat and heat transfer via problem-based learning-integrated Kasongan pottery ethno-STEM. The data analysis techniques used in this study were performed via inferential statistics (univariate independent sampel t-test analysis); with a significance level of 0.05. The results revealed a significant difference in the scores for conceptual mastery improvement between the experimental class and the control class. The average score for conceptual mastery improvement in the experimental class was 0.59; with a standard deviation of 0.56, whereas the average score for conceptual mastery improvement in the control class was 0.11; with a standard deviation of 0.59. On the basis of the t-test results, the sig. value was obtained 0.004 < 0.05, it can be concluded that there is a significant difference in concept mastery improvement between the experimental class and the control class. The average concept mastery improvement score of the experimental class was 0.48 higher than that of the control class. Thus, problem-based learning-integrated Kasongan pottery ethno-STEM can significantly improve elementary school students' concept mastery of science.

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