Evidence-Based Reasoning (EBR) is a framework of inquiry-based teaching for developing scientific reasoning. This research aims to analyze the effectiveness of EBR in inquiry-based Physics teaching to improve students' scientific reasoning. Applying Slovin formula for sample determination, the research involved 139 upper-secondary school students with similar prior knowledge. This research used one group pre-test post-test design with replication. The effectiveness of teaching on improving scientific reasoning was analyzed by using Paired Sample T-test. ANOVA was used to analyze the consistency of the teaching effectiveness across in test group. The findings indicated that EBR effectively improved students' scientific reasoning in inquiry-based Physics teaching based on two main grounds. On the first, the significance was ensured by N-gain category of scientific reasoning component, which proved (a) control of variables reaching high category, (b) proportional thinking at moderate category; c) probabilistic thinking reaching moderate category, (d) hypothetical-deductive reasoning attaining low category; and (e) correlational thinking achieving low category. In addition, the level of scientific reasoning has attained the experience characterized by slightly imperfect answers. Students voiced positive response to EBR, which stated that it helped them engage in scientific reasoning in Physics learning. They also voiced the general opinion on EBR and inquiry-based learning in general. Keywords: evidence-based reasoning, inquiry teaching, physics teaching, scientific reasoning.

The design of a teaching model must qualify to be applicable or practical and effective, therefore the research aimed to analyze the practicality and effectiveness of the IBMR (Investigation-Based Multiple Representation) teaching model in improving physics problems solving skills of bachelor programs’ students. The research was conducted by applying the one-group pre-test and post-test pre-experimental design to 186 students of study program of physics education, mathematics education, and mechanical engineering. The practicality of the model is assessed using an observation sheet and the effectiveness is determined based on pre-test and post-test physics problem solving skills. The collected data were analyzed using the calculation of average scores of the feasibility of each phase of the IBMR, t-test, and n-gain. The results show that each phase of the IBMR teaching model can be implemented by a lecturer with good and reliable categories, and relevant student activities, so that the IBMR teaching model is practicality qualified. It is also effective shown by: there are increasing score of physics problem solving skills at  = 5%, average n-gain with moderate categorized and not different or consistent for each pair of groups, and good-categorized students’ responses on each component of teaching. Keywords: IBMR teaching model, model practicality, model effectiveness, physics problem solving skills, bachelor programs’ students.

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This study aims to improve the ability of the inquiry learning tool integrated with local wisdom in improving students' critical thinking skills. There were four classes of experiments to determine entitlements in research results, which were also designed as pretest-posttest groups. The sample in this study were 100 students, who were divided into four groups using saturated sampling technique. The critical thinking skills test consisted of 6 items which were declared valid. The results showed that the thinking skills of students before and after learning the software were significantly different (p <0.05). These results indicate that the learning tools developed effectively improve students' critical thinking skills, although the average increase in each indicator is in the medium category. This condition indicates that for further research it is necessary to develop an inquiry model that is integrated with local wisdom.