Development of PhET-assisted Problem Based Learning Physics E-Book to Improve High School Learners' Concept Understanding

Abstract

The 21st century is an era where technology is increasingly advanced. Integrating technology in learning, especially physics, can increase student interaction in learning. 21st century skills cannot be achieved without concept understanding. It was found that 70% of students still did not fulfil the appropriate concept understanding ability. This research aims to develop a PhET-based problem-based learing e-book that can improve students' concept understanding. The research method used is the research and development method. The development model carried out in this study is the ADDIE model. Furthermore, the research was conducted with a research design in the form of pre-experimental design. The research technique was carried out using the pretest posttest control group design technique. The research subjects were determined by cluster random sampling technique. The results showed that the PhET-based problem-based learning e-book was feasible to use from the aspects of content feasibility, language and images, presentation, graphics, and additional content by obtaining an ideal standard score of 0.5 which was included in the very good category. In addition, the developed e-book is also effective in improving students' concept understanding by obtaining an N-Gain value of 0.76 in the modelling class with a high category and 0, 57 in the implementation class with a medium category.