摘要：Teaching has always been undergoing strategic development and changes. Over the years theteacher-centered approaches are replaced by the student-centered methods. Even in the presentera the individualized methods of instruction are being preferred by the educationists.Problem-based learning approach is one of the latest instructional strategies being adopted foreffective and successful learning. The purpose of this research at hand was to comparestudents’ achievement in subject of science taught with Problem-Based learning (PBL)approach and the traditional method of teaching. The experimental group comprising of 35 8thgraders were treated with the independent variable problem-based learning method. Thecontrol group was not given any treatment and was taught traditionally. It was found afteranalysis that the experimental group who had received instruction with problem-basedlearning (PBL) showed better performance as compared to traditional group students.
关键词：Problem-Based learning; constructivism; achievement test of science (ATS).
