Initial Investigation of the Development A Science Practical Work Demonstration Video for SMP/MTs Oriented to Critical Thinking on the Human Excretory System. universe [Internet]. 26 Desember 2022 [dikutip 13 Agustus 2026];3(2):153-9. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/306