THE DEVELOPMENT OF INTEGRATED SCIENCE WORKSHEET NESTED TYPE FOR 8th GRADE OF JUNIOR HIGH SCHOOL STUDENTS ON THE HUMAN DIGESTIVE SYSTEM MATERIAL. universe [Internet]. 30 Juni 2024 [dikutip 13 Agustus 2026];5(1):18-25. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/263