This research aims to develop an adobe flash learning media using aptitude
treatment interaction to improve reasoning. The research method was Research and
Development (R&D) with 4D model design, to increase the reasoning ability, Quasi�Experimental research with a 2x2x2 Factorial research design was used. The population of this
research was the entire class XI MIPA SMAN 1 Pantai Cermin in the academic year of
2018/2019. The sampling technique used was cluster random sampling. The data analysis
technique used to test the hypothesis was ANCOVA. The results showed that (1) physics
learning media is valid, very practical, and effective, (2) the average physics learning outcomes
integrated reasoning ability on the kinetic theory of gas at XI MIPA 1 is 92 (independent) and
87.56 (re-teaching), while XI MIPA 2 is 88.83 (independent) and 90.56 (re-teaching). Learning
outcomes in class XI MIPA 1 thermodynamic material are 89 (independent) and 88.31
(reteaching) while XI MIPA 2 is 85.92 (independent) and 86.78 (re-teaching). It can be
concluded that the Aptitude Treatment Interaction model assisted by Adobe Flash media
affects the increase in integrated learning outcomes of students' reasoning abilities which are
categorized as faster students who are taught in self-learning and reteaching.
Keywords: Aptitude Treatment Interaction (ATI), Adobe Flash, Reasoning