فهرس المقالات Continuous Improvement Process حرية الوصول المقاله صفحة الملخص نص كامل 1 - The Effect of Applying the PDCF Model on the Performance of the General Mathematical Problem-Solving Farshid Mirshahi Zahra Shokooh Ghazani Ahmad Shahvorani Semnani 10.71932/ijm.2025.1199913