Restika Rahmadani, and Sari Herlina. “LEARNING TOOL DEVELOPMENT WITH THE PROBLEM BASED LEARNING (PBL) MODEL-ORIENTED MATHEMATICAL CRITICAL THINKING ABILITY”. Mathematics Research and Education Journal 4, no. 2 (October 30, 2020): 16–22. Accessed July 21, 2026. https://journal.uir.ac.id/index.php/JPM/article/view/9287.