Throughout the lesson students had to demonstrate mastery of the following:[br][br]Construction/ creation of triangle centers using GeoGebra.[br]Understanding definition of terms associated with the lesson. [br]Identifying the different centers and other parts of the triangle. [br]Analyzing the properties and uses of the triangle centers studied and the Euler Line.[br][br]Throughout the lesson and with the help of the lesson assessment the teacher will check the following student skills: [br][br][list=1][*]Students is able to construct triangles using GeoGebra.[/*][*]Students understand incircle, circumcircle, and circumcenter, based on a triangle.[/*][*]Students will be able to identify the medians in a triangle, the lengths of medians, and the ratio of the length from the vertex to the centroid, and the ratio of the length from the centroid to the midpoint of the side.[/*][/list]