Class 4 Elementary School Teachers Book Independent Curriculum to realize programs at the education unit level. This application was created to make it easier for students to learn anywhere and anytime.This teachers book is a free book that is copyrighted by the Ministry of Education and Culture. The application only provides learning materials but does not represent the Ministry of Education and Culture. The material is sourced from kemdikbud.goid.In-app teacher books are available for Indonesian, English, Science, Mathematics, PPKN and Belief lessons.The features available in this application are:1. Links between chapters and sub chapters2. Responsive display that can be enlarged.3. Page Search.4. Minimalist landscape display.5. Zoom In and Zoom Out.