Impact of the Integration of GeoGebra on Teaching the Notion of Radian

The aim of this study is to evaluate the impact of the dynamic geometry software GeoGebra on student achievement in teaching of trigonometry, especially measuring an angle with Radian. the population for this investigation included 48 students of 1st year of high school scientific, splited into two groups. The experimental group was given the task of integrating GeoGebra software. However, constructivist teaching was used to present the notion (Radian) for the control group. The application of ANNOVA analysis and Tukey test showed that the experimental group outscored the control group. We concluded that using GeoGebra helps students become more adept at understanding notion of radian. Keywords: GeoGebra; Teaching; Trigonometry; Radian; Constructivist.