Previously, the development of CCT has been conducted since the previous decade until current age. However, the latest version of CCT has several weaknesses in such aspects as: the visualization of abstract phenomena and it has seldom been assisted by computer simulation. This research aims to develop Computer Simulation-Assisted Conceptual Change Text (CS-CCT) by way of a continuation of the previous research combined with computer simulation. A Formative Development Method (FODEM) has been utilized to obtain a valid and comprehensive data collection. A FODEM consist of three components that are: (1) needs analysis, (2) implementation and (3) formative evaluation. Participants were occupied from 33 students who studied in one of Senior High School located in Bandung city. Participants were taken using random sampling techniques. Data obtained from the results of the pre-test using the four tier-test instruments and classroom learning. Then, the data codification technique was conducted to distinguish students based on 5 levels of conception. The result shows that CS-CCT is able to be designed and developed in term of facilitating students to change their conceptions. Thus, it could be concluded that the development of CS-CCT is able to facilitate students conceptual change on fluid dynamics conceptions.