Ningrum WP. PENERAPAN MODEL PEMBELAJARAN BERPUSAT SISWA DALAM MENGEMBANGKAN KETERAMPILAN PROSES SAINS DAN PEMECAHAN MASALAH SISWA: IMPLEMENTING OF DESIGNED STUDENT-CENTERED INSTRUCTION TO DEVELOP SCIENTIFIC PROCESS SKILL AND PROBLEM SOLVING. OJPK [Internet]. 2018 Dec. 28 [cited 2025 Apr. 19];2(2):71-9. Available from: https://jurnal.radenfatah.ac.id/index.php/orbital/article/view/2608