This study aims to produce an interactive e-module based on some criteria e.g. creative, active, systematic, and effective (CASE) as an alternative to transformation geometry learning media to support student’s learning autonomy and competence. This is development research with four-D development model, namely defining, designing, developing, and disseminating. The results of the defining stage (needs analysis during preliminary study) show that most students are more interested in transformation geometry lectures that utilize instructional material in the form of interactive electronic modules (e-modules) that enable the students to study independently and easily understand. The results of the designing stage are to design the initial draft of an interactive e-module of transformation geometry with the following systematic: introduction (preface, e-module usage, material description, prerequisites, learning objectives), learning activities which include material descriptions and sample questions, exercise questions, competency tests, training answer instructions, feedback, and referral lists. On the developing stage produces the draft of the e-module about transformation geometry. The draft of the e-module has been designed and developed systematically by adhering to the principles of instructional material development in learning. The test result to the draft of e-module (limited trials) gains overall average score of 3.30, which means that the students assess the product of the interactive e-module transformation geometry is good.
