Pengembangan E-Modul Problem Based Learning (Pbl) Pada Materi Sistem Pertahan…

The 21st century is the century of openness or the century of globalization. This globalization has an impact that requires everyone to improve their quality so that they are able to compete in the 21st century. The 21st century makes the role of education increasingly important in preparing the next generation who have learning skills, innovation, skills in using technology, information media,…