Learning and teaching process of math and the form of how we use math has been reshaped with the radical innovations in science and technology in recent years. One of the important factors in the education field which the realization of change and development are undoubtedly connected is teachers. When considered in the literature, it is seen that teachers has lacking in effective use of information-communication technologies and integrated in the teaching process, also it seems that they feel inadequate in using information-communication technologies. From this determination, it is aimed to investigate teachers' views on the feasibility and effectiveness of worksheets which are developed in this study to allow teachers using GeoGebra in the teaching process without expert assistance in lesson and before the lesson. A case study of the research method is used. The participants of the study are five mathematics teachers that are working in a High School. In collecting the data, semi-structured interviews were used. Results were handled with the themes which are the effects of worksheets, the impact of worksheets on students and the process of education and training required for the implementation feasibility. Worksheets are expected to provide contribution to teachers who want to use computer effectively in their teaching process since the worksheets; are student centered, has an instructive structure of a software intended for computer assisted education and can be implemented with the basic computer knowledge, especially without expert assistance.