Development of a tectonic earthquake knowledge enrichment digital book to improve students’ critical thinking skill

Abstract In order to enhance students’ critical thinking skills, this study is creating a digital book about tectonic earthquakes that can improve students’ critical thinking skills. The benefit of this book is that it can improve students’ critical thinking skills, which was proven to physics study program students at the University of San Pedro Kupang, NTT, Indonesia. The development model, ADDIE, which stands for Analysis, Design, Development, Implementation, and Evaluation, is used in this research method, known as research and development (RnD). The network can access knowledge enrichment books created with the Page-Flip Pro 3D application and accompanied by videos, pictures, content of materials, presentation, language, and graphics. A sample of 49 current participants in the physics study program was selected using a simple random sampling technique. Experts in media, material, and learning conducted the validation. The validation results of media experts were 82,5 (very good), material experts were 76 (very good), and learning experts were 81 (very good). Then this digital book was tested on physics students’ critical thinking skills. N-Gain critical thinking test produced a score of 91.34% (effective). So, the development of a tectonic earthquake knowledge enrichment digital book can improve students’ critical thinking skills.