Developing An E-Book Based Introduction To Economics Learning Materials Using Aldiko Classic Application For Social Science Students.

This research has a long-term purpose: to implememt the study of introduction to economics effectively and efficiently. The learning materials developed were the non-printing type using the Aldiko Classic application so that the students do not have to spend more money to buy the printed learning material. The students jusr have to download the application (for free) in Playstore and install the learning mterials of introduction to economics developed in such application. It was expected that the social science educations students better understand the learning materials thaught by the lecturer using the e-bookeand ease them to study indepently. The stages is developing the e-book based learning materials are as follows: 1.) Analysis stage (analysis) covers the analysis of learning sources and learning materials requirement, 2.) Design (stage) design is to determine the learning material framework, cover learning material, layout, references, and creating assesment instrument of learning material 3.) Development stage (development) covers developing on e-book based learning material, experts validation and revision 4.) Implementation stage (implementation) is the trial test of learning materials wich has been validated, 5.) Evaluation stage (Evaluation) is the stage to analyze weakness and strength if learning material which has been tested to students. The research result are 1) the development of an e-book based introduction to economic learning material has excellent feasibility because it has been conducted validation with an average score of 83% (valid). 2) the learning material of e-book based introduction to economics was declared practical to be use by the students based on the results of the response questionnaire with an average score of 77% (practical).