Nuraini Z, Ekaningtias M. Development of Pop-up Teaching Materials Excretion Systems for Junior High School Students. J. Penelit. Tindak. Kls. [Internet]. 2023 Apr. 30 [cited 2026 May 18];1(1):14-20. Available from: https://didaktika.lombokinstitute.com/index.php/JPTK/article/view/3