MARSIA ADIMANI NDRURU. The application of a problem-based learning model to increase student learning activeness on ecosystem material in class x agribusiness of food crops and horticulture at state vocational high school 1 hilimegai in the 2022/2023 academic year. Journal of Education Innovation and Curriculum Development, [S. l.], v. 1, n. 3, p. 75–79, 2023. Disponível em: https://journals.iarn.or.id/index.php/educur/article/view/240. Acesso em: 21 may. 2025.