Atika, Mufti Sudibyo, Idramsa. DEVELOPMENT OF STUDENT WORKSHEET ON PROTOZOA MATERIAL FOR MASTERY OF CONCEPTS AND CRITICAL THINKING SKILLS AT SEKOLAH MENENGAH PERTAMA NEGERI 16 MEDAN. MORFAI [Internet]. 2025 Jun. 12 [cited 2025 Jun. 21];5(4):2224-30. Available from: https://radjapublika.com/index.php/MORFAI/article/view/3199