This performance task is designed for third grade students and higher to compare and contrast a group of items based on attributes or actions classified into at least two sets and subsets.  The items being classified are polygons.  The use of algorithms and flowcharts is also a key component of the performance task.

This resource can be found in Illustrative Mathematics website. There are a few modifications that were necessary to support the original lesson. Suggested modifications: Instead of providing with an activity, I strongly suggest activating student's background knowledge with a book on "The Greedy Triangle" by Marilyn Burns which encourages literacy in the curriculum. Students often are motivated to write a children's book or a poem, as it allows them to think outside the box. Secondly, the suggested activities will allow students to explore and have a mathematical dialogue about different polygons, and discourage rote memorization of geometric shapes. 

This is a remix of Polygons from Illustrative Mathematics, https://tasks.illustrativemathematics.org/content-standards/tasks/1506.The purpose of this lesson is for students to define and practice identifying polygons to support sol 3.12a and 3.12b.  The lesson starts with a discussion about four polygons (triangles, quadrilaterals, pentagons, and hexagons).  Next, students play a game called 4 corners.  By incorporating movement games and activities in my classroom, the attention and behavior of my students have improved.