The purposes of this study were to investigate pre-service science teachers‟ cognitive structures and ideas about the nature of technology. The study was conducted with the participation of senior pre-service science teachers (N=41) in fall semester of 2007. The participants were enrolled in a science, technology and society course during data collection. Three instruments were used to gather data: a word association test (WAT), Views about Technology Questionnaire (VTQ) and an interview protocol. Participants‟ cognitive structures about technology were investigated by using WAT. Participants‟ ideas about the nature technology were also investigated by using VTQ and the interview protocol. The data triangulation provided a means of observing similar findings by using different instruments. The findings suggest that participants‟ cognitive structures about technology and their knowledge about definition of technology, ideas about the mutual interaction between technology and society, and ideas about social structure of technology were found to be at a lower level (naïve views). Notably, it was seen that the participants did not sufficiently discriminate between technology and science. In sum, they regard technology as a sub-discipline or output of applied science. They understand technology merely as computers, inventions and products of science, perhaps, due to their everyday experiences the way technology is presented news in mass media.