“IMPROVING COGNITIVE LEARNING OUTCOMES OF SCIENCE LESSONS THROUGH PROBLEM BASED LEARNING MODELS ASSISTED BY PUZZLES” (2022) maktab: Jurnal Pendidikan dan Teknologi, 1(1), pp. 249–258. Available at: http://journal.citradharma.org/maktab/article/view/470 (Accessed: 13 December 2025).