. P, L. Juneau J. IMPLEMENTATION OF PROBLEM-BASED INSTRUCTION LEARNING MODEL USING MEDIA KOTAK DAN KARTU MISTERI TO IMPROVE STUDENT LEARNING OUTCOMES. JH [Internet]. 2017 Aug. 25 [cited 2025 Jan. 31];7(2):137-41. Available from: http://103.242.233.34/index.php/handayani/article/view/7245