Background: Problem-based learning (PBL) as a teaching strategy has recently become quite widespread in especially chemistry classes. Research has found that students, from elementary through college, have many alternative conceptions regarding "enthalpy changes in systems." Although there are several studies focused on identifying…

Background: A growing number of educators have started exploring student-centered approaches to improve students' learning and satisfaction with courses and programs. While prior research shows a positive impact of such strategies on student learning, further exploration of the perceptions of traditional, lecture-based and other more inquiry-based…

Background: Problem-based learning (PBL) is a teaching approach working in cooperation with self-learning and involving research to solve real problems. The first law of thermodynamics states that energy can neither be created nor destroyed, but that energy is conserved. Students had difficulty learning or misconceptions about this law. This study…