The module is a companion book created for semesters 1 to semester 4. This book was created to help EKIs students prepare for UTS and UAS, as well as progress to help Ekis students' own academic grades. This module is made like a summary system based on the syllabus from courses in semester 1 to semester 4. It depends on the semester we are studying. Why only semesters 1-4? Because the rest is a major concentration, which will only be discussed in detail and leading in that semester, not intended for the lower semester. However, it is emphasized once again that this module is only a companion book, and Ekis students are recommended to continue studying the main book for a more detailed explanation. "Whoever takes the path to seek knowledge, Allah will make the path easier for him to heaven." (HR. Tirmidhi)