Izhar Ali Amur, Dr. Mahboob Ali Dehraj, Mohsin Ali Amur, Asghar Ali Rajput, “STUDY THE EFFECTIVENESS OF HEURISTIC STRATEGY WITH METACOGNITIVE AND INVESTIGATION APPROACH TO THE STUDENTS MATHEMATICAL PROBLEM SOLVING ABILITY”, J Arch.Egyptol, vol. 17, no. 9, pp. 10020 - 10026, Nov. 2020.