Pinkan Deviana Khairunnisa, Indayana Febriani Tanjung. STEM Based Student Worksheets to Improve Ecosystem Material Critical Thinking. JP2 [Internet]. 2023 Mar. 18 [cited 2024 Dec. 30];6(1):48-55. Available from: https://ejournal.undiksha.ac.id./index.php/JP2/article/view/59414