With the advent of technology in our time, many researches have been conducted and much software has been developed regarding the usability of computers in mathematics teaching. By using GeoGebra which is dynamic mathematics software, this study has aimed to prepare materials about symmetry which is one of the subjects of analytic geometry lesson in secondary education. For that purpose, materials have been formed, which can assist students in taking symmetry of point and line in accordance with coordinate axes, origin, y=x and y=-x lines by paying attention to the directions on the given worksheet, and as a result, internalizing the basic logic of the concept of symmetry.