Action research in the physics classroom: the impact of authentic, inquiry based learning or instruction on the learning of thermal physics

Students experience thermal physics phenomena from a very young age, but in Singapore their formal science instruction occurs in Primary 3 or 4 (aged 9 or 10) and again in secondary school (aged 13 to 16). Hence, students often form alternative or incomplete scientific conceptions related to thermal physics well before they begin learning it in the science classroom. The team of teachers involved in this study, therefore, believed that traditional instruction would be largely ineffective because it does not take into account students’ existing beliefs about thermal physics. An action research process was undertaken to investigate if a more interactive and engaging pedagogical approach, such as authentic, inquiry based learning, could make students’ thinking more explicit through discussions and other social interactions. Three intact classes of Secondary-3 students were selected: a high-performing control group and a low-performing control group using Traditional Physics Instruction (TPI) and an experimental group using Authentic Inquiry-Based Instruction (AIBI). Students in the experimental group demonstrated significant gains in conceptual understanding and student self-efficacy, although students in the high-performing control group continued to outscore students in the experimental group. Further analysis of the data revealed a correlation between students’ achievement on a standardised test and conceptual understanding of the subject matter in the AIBI classroom. Traditional forms of instruction are inadequate because they do little to develop students’ self-efficacy and interest in the subject matter. More emphasis should be placed on embedding authentic and formative assessment tasks within the curriculum, rather than end-of-unit standardised tests.