Fikri, Fatayatul, and Miza Nina Adlini. “Discovery Learning Based Ecosystem Student Work Sheet to Improve Problem Solving Ability of Students in Class X MA”. Jurnal Penelitian Pendidikan IPA 9, no. 6 (June 25, 2023): 4551–4557. Accessed May 17, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/3858.