Incorporating technology into lessons has become a requirement for many curriculums. With technology evolving and being an influential part of a person’s everyday life. By incorporating technology into the classroom it sparks an interest in the students, no matter what grade level it is. Using technology to teach a concept also makes the class relevant to the students because they are moving away from traditional lecture classes. In a geometry class, students are experimenting with transformations in planes and learning the similarities in terms of similarity transformation. Several students struggle with geometry because they have issues visualizing the triangles and planes. By using Geogebra, this free application allows students to work with shapes and visualize planes.

Geogebra is available for free download at www.geogebra.org. The standard CCSS.Math.Content.HSG-SRT.C.6 Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles. Geogebra would be excellent to teach this standard because it allows students to create triangles, edit them, move them around and enhance them. By using this technology it allows visual representation of triangles as an alternative explanation. When students can visually prove to themselves that two triangles are similar or congruent it allows them to remember the concept long term.