This paper describes the design of an educational module which aims to raise awareness and change the attitudes of elementary school students about focal endangered species in protected areas. The proposed design builds on, and extends the General Teaching Model. The educational module which was developed through this approach was pilot-tested in two Greek elementary school classes, involving 29 students who provided their opinion through a questionnaire. The results verify that the educational module had a significant effect on the cognitive level and the attitudes of the students. Therefore, it is argued that the proposed design approach can form the basis for the development of educational activities and strategies which can raise awareness and change the attitudes of elementary school students about the conservation of endangered species. It can also be used in non-formal educational settings, such as National Marine Parks. (Contains 3 tables and 1 figure.)