The Effectiveness of Interactive E-Book for Self-Study and Increasing Students' Critical Thinking Skills in Electromagnetic Radiation Topic

Abstract

This research aims to develop interactive e-book on electromagnetic radiation topic, which can be used for self-study, and to increase students critical thinking skill. The methodology in this research is based on ADDIE model research and development (R&D) design which consist of analysis, design, development, implementation, and evaluation. The data resource was the students and teachers of XII grade of senior high schools in Lampung Province. The instrument used were questionnaire and test instrument. Data analysis technique was conducted descriptively with interval using n-gain, independent t-test, and paired t-test. The research showed that interactive e-book on electromagnetic radiation was effective for self-study and to increase critical thinking skill of the students significantly at a confidence level of 95%, with N-gaining experimental group = 0.76 which was higher than in control group = 0.55. Therefore, it can be concluded that the product which was developed namely interactive e-book on electromagnetic radiation is effective for self-study and to increase students' critical thinking skill.