This rubric is designed to assess students' abilities to classify polygons according to their properties. The students write using a RAFT strategy (Role, audience, Form, Topic). The student pretends to be a Billboard designer that writes a businees letter to an advertising company. The letter is written to convince the company they need to change their billboard from rectangles/quadrilaterals to a polygon of their choice. The letter must be 4 paragraphs long with an introduction, 2 body paragraphs, and a conclusion. The rubric begins with I-LEAP focused writing skills then skills that are for this assignment or next. While this was done in a math class it can also be used in writing. The students must also draw a sample billboard of their polygon to include with the letter.