Evidence for the teaching involves transmission of knowledge, superiority of guided transmission is explained in the context of our knowledge, but it is also much more that. In this study we have examined General Sir John Kotelawala Defence University's cadet and civilian students' response to constructivist learning theory and participatory teaching methods, especially concepts and knowledge on the learning platform in the Defence University. Target population of this study represents 41 students. All students were given a questionnaire related to constructivist learning theory and participatory teaching methods. The claims of constructivist teaching/learning theory that this paper has singled out are the following: 1) learning is an active experience; 2) the ideas students hold about the subject and topic being taught will form a part of their learning experience; and 3) learning is socially and culturally rooted. Recent developments in Constructivist Teaching/Learning Theory was explained and briefly described in this paper.