3D printers, it is possible to define these technologies as the tools that allow the production of 3D objects from different types of raw materials to be stacked in layers and to print out concrete 3D material. In this context, 3D modelling programs are very important software for 3D printers. In current research, it was aimed to determine the experiences and opinions of secondary school students on 3D modelling programs and 3D printers. In current research case study method was used. In the scope of this study, a total of 30 participants from 6th grade in the 2017-2018 academic year, who were students at a secondary school, participated in this research. An implementation was carried out with the students. A semi-structured interview form has been developed by the researcher. In data analysis process, content analysis method was used. In current research, 3D modelling programs and 3D printers can be said to be appreciated by users. 3D modelling programs are effective in developing fast prototypes and making easy drawings. 3d printers has an important impact on developing effective learning environments and facilitating understanding. 3D printers' offering freedom in material development, and their success in embodying the imagination have been the most remarkable advantages. Especially long output time and high cost of output can be among the most important limitations of 3D printers. In particular, it is thought that these 3D printer technologies can be effective in Science and Mathematics teaching. It can be said that the superiority of 3D printers in material development is one of the most important factors in the use of the given courses. It can be said that 3D printers can be used in almost all areas of daily life.