DURUK, Ümit; AKGÜN, A. . USING REAL ENGAGEMENT IN THE ACTIVE PROBLEM-SOLVING MODEL IN TEACHING SCIENCE: AN INTERPRETIVE PEDAGOGICAL CONTENT KNOWLEDGE STUDY OF AN EXPERIENCED SCIENCE TEACHER. International Online Journal of Education and Teaching, [S. l.], v. 7, n. 4, p. 1741–1772, 2020. Disponível em: https://iojet.org/index.php/IOJET/article/view/1079. Acesso em: 29 dec. 2025.