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Edi Istiyono

Publications and source records attributed to Edi Istiyono.

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Exploring Students perceptions of their learning experience and self efficacy in physics online class with project based learning

Project Based Learning (PBL), recognized as an active learning strategy, has been linked to self efficacy of student in prior studies, including those within Physics Education Research. Meanwhile, technological advancements have significantly facilitated the optimization of diverse learning modes, including online learning. However, comprehensive investigations addressing questions such as how students perceive PBL and their self efficacy, what forms of PBL design they prefer, and what benefits and challenges they encounter during its implementation remain underexplored in existing literature. This study sought to uncover the experiences of ten students through longitudinal observation in an online PBL Physics class, focusing on its influence on their self efficacy within a phenomenological study. Data were collected via semi structured, in depth interviews. Social Cognitive Theory, Self Efficacy theory of Bandura, and theoretical framework for the impact of project based learning on educational outcomes were employed as guiding frameworks to shape the interpretation of students experiences and perspectives. Through Interpretative Phenomenological Analysis (IPA), the researchers identified four primary themes representing the experience of students. There are, variety of unique learning experiences based on students perceptions about their character, pivotal experience as a catalyst in the learning process, student self efficacy in Project Based Learning, and self reflection based on prior experience. The findings contribute novel insights for educators in implementing PBL, particularly in online contexts, by highlighting strategies to accommodate diverse student personality characteristics. Moreover, the study provides helpful references for longitudinal research on the interplay between PBL and self efficacy.

physics.ed-ph

Physics Teachers' Perceptions about Diagnostic Assessment of Students' Physics Misconceptions: A Phenomenological Study

Misconception is the difference between a student's idea and his scientific concept. Physics learning needs to be designed by teachers to minimize misconceptions. Different diagnostic tools have been developed and used by researchers to identify student misconceptions. This study addressed to uncover the experiences of eight physics teachers on how they apply diagnostic tools to detect misconceptions experienced by students investigated through phenomenological studies. Physics teachers are invited to volunteer to participate in this research. Physics teachers involved in this research have diversity based on the period of experience teaching physics, geographical area, and the level of students faced. A semi-structured interview (duration of 40 to 60 minutes) through virtually was conducted by the author for all physics teachers involved in this study. Personal Practice Theories (PPTs) by Cornett was chosen as a framework to reveal the experiences and perspectives of physics teachers in making judgments about students' misconceptions of Physics. The findings revealed that four themes were obtained. These themes are (1) personal experiences of Physics teachers, (2) Physics teachers' knowledge, (3) practices in assessing Physics misconceptions, and (4) teachers' reflections on future assessment practice.

physics.ed-ph

Validating Light Phenomena Conceptual Assessment Through The Lens of CTT and IRT Frameworks

Light phenomena conceptual assessment (LPCA) is a conceptual survey of light phenomena that has been recently established by the physics education research (PER) scholars. Studying the LPCA psychometric properties is always imperative to inform its measurement validity to potential LPCA users or beyond general educational researchers. Classical Test Theory (CTT) and Item Response Theory (IRT) are two popular statistical frameworks that can be utilized to explore the LPCA measurement validity. To our knowledge, no PER studies have been attempted to make a head-to-head comparison of those methods while validating the LPCA. This study was the first to delineate the LPCA measurement by statistically comparing the CTT and IRT based analysis. The LPCA dataset was drawn from physics students of eight secondary schools presented by Ndihokubwayo et al (2020). Our results accomplished the harmony between the CTT and IRT arguments to estimate the LPCA item performance and students' ability probed by the LPCA. They supported that the LPCA may be used as inventory for evaluating conceptual understanding of light phenomena from low to high students' ability range even some flagged LPCA items were exist based on CTT and IRT arguments. Special considerations for further refinement related to the discriminating power for some problematic LPCA items are discussed.

physics.ed-ph