Developing a Director MX Program-Based Learning Media to Improve the Learning Quality of Nuclear Chemistry and Radiochemistry Topics. This research was aimed to describe how to develop a learning media using director MX and examine the effectiveness of this media for Nuclear Chemistry and Radiochemistry topics. The final product of this research development was a compact disc (CD) learning media. The process to develop a director MX program-based learning media consisted of collecting references, installing the program, creating media, reviewer's evaluation, revision, application and evaluation. This study concluded that the quality of media was good. Furthermore, the application of media is effective to improve students' motivation and their learning achievement.