Abstract
The problem in this research is the decline in students' attitude skills and students' skills in understanding a difficult lesson. This study aims to develop students' attitudes and assist students in understanding the teaching material. The development of this E-Book can increase the enthusiasm and motivation of students in developing attitudes and understanding of the material. The research method uses the design and development (D&D) model with the development model using ADDIE. The product made is in the form of an E-Book and at the time of testing, the E-Book product became one of the solutions to the existing problems. It can be seen from the level of effectiveness and readiness of E-Book products reaching 80% based on the assessment of students and teachers. In addition, the level of usefulness of the E-Book is 85% based on the teacher's assessment in supporting the learning process. It can be concluded that E-Book products are able to make students develop attitudes and help students understand the teaching material.