Here are 12 task cards for students to practice identifying polygons. Students have a recording sheet to circle YES if the figure is a polygon and NO if the figure is not a polygon. If the figure is not a polygon, students write a sentence explaining why. A student recording sheet and answer key are included. These cards can be used as an around the room activity or a math station. Students could also simply sort the cards into two groups-Polygons and Not Polygons.