Dacumos LPN. Perspective of Secondary Teachers in the Utilization of Science Strategic Intervention Material (SIM) in Increasing Learning Proficiency of Students in Science Education. AsTEN Journal [Internet]. 2016 Dec. 29 [cited 2025 Apr. 1];1(2). Available from: http://po.pnuresearchportal.org/ejournal/index.php/asten/article/view/293