1.
Siregar HD, . M. THE EFFECT OF KOOPERATIF LEARNING MODEL TYPE GROUP INVESTIGATION AND FIRST CONCEPT UNDERSTANDING TO SCIENCE PROCESS SKILL OF SENIOR HIGH SCHOOL STUDENT. JPF Unimed [Internet]. 2016 Jun. 1 [cited 2025 Jul. 9];5(1):51-7. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/3707