Istiana R, Herawati D, Herniningtyas F, Ichsan IZ, Ali A. STEM Learning to Improve Problem Solving Ability on the Topic of Environmental Education. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Mar. 31 [cited 2024 May 20];9(3):1202-8. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/2979