Module is a companion book made for semester 1 to semester 4. This book is made to help EKIS students in preparation for UTS and UAS, as well as progress to help the academic values ​​of Ekis students themselves. This module is made like a summary system based on the syllabus of the course in semester 1 to semester 4. Depending on the semester we are exploring. Why only semester 1-4? Because the rest there is a concentration of majors, where it will only be discussed in detail and leads to the semester, not intended for the bottom semester. However, it is stressed that this module is only for a companion book, and Ekis students are recommended to continue to study in the main book for more detailed explanations. "Whoever takes the way to study, God will make it easier for him to go to heaven." (HR. Tirmidzi)