Sahar BokosmatySignificant technological tools have impacted on students’ learning of Mathematics. In this study, I wish to seek evidence that dynamic geometry enhances students’ understanding of certain geometric properties and can serve as a vehicle for discovering unknown properties. The aim of the study is to explore the impact of dynamic geometry on 40 Year 9 high school students’ understandings of geometric properties. A mixedmethodology will be utilized in order to confirm the findings from different data sources; such as interview, video and audio recordings, computer savings, students’ workbooks, and pre- and post-tests.