Usually when it is time to start a new section, I give the students a reading assignment before covering the material but this time I am approaching polygons and their interior measures a bit differently. I am having them do the exploration before reading the section. The exercise has them draw various polygons beginning with a triangle, then a quadrilateral, pentagon, etc.
As they create the polygon on geoboard, they subdivide the shape into triangles. They use the triangles to calculate the total angle measure and the measure of each angle.
This exercise is allowing them to build or strengthen their foundational knowledge before they read the section tomorrow. I am hoping this will give them a better understanding of the material since most of my students are ELL.
This activity kept my students engaged the whole period and it was easier because no paper was used, no lost rubber bands or broken boards. I am going to use this activity again.