Abstract
Indonesia coastal line is the fourth longest coastal line in the world. But, the coastal areas had been damaged by some natural phenomena, such as abrasion. The effort to integrate abrasion disaster theme to Physics is achieved by e-book. The characteristics of the E-book are in accordance with the virtual learning in Google Classroom. The e-book integrated to Problem Based Learning. The purpose of this research is to produce e-book integrated to mitigation of abrasion disaster based on Problem Based Learning supported by Google Classroom which is valid, practical, and effective. The type of this research was Research and Development. E-book development used Plomp model. Assesment instrument were, needs analysis, validity, practicality, self assessment, and performance assesment questionaire, and also test. Techniques of data collection that being of preliminary research, validity analysis, practicality, and effectivity analysis. The result of the research shows that the e-book was valid, practical and effective. E-book can be used for offline and online learning. The conclution is Physics e-book integrated to mitigation of abrasion disaster based on Problem Based Learning supported by Google Classroom was valid, practical and effective to improve stundents competences