Differentiating with Area and Perimeter - use your tile floor in the classroom or hallway to help students practice identifying the area and perimeter of irregular polygons! They loved it in my classroom and were completely engrossed the whole time.
Awesome area and perimeter game for 5th and 6th graders! The Area & Perimeter Tic-Tac-Toss Game Combo includes the original game along with challenging Area and Perimeter Task Cards that include a variety of irregular polygons, triangles, and quadrilaterals. Customary and metric cards included. $
My use of a great technique making half square triangle unites from strip pieced squares. Strip piece two squares, turn one square so that it has strips horizontally, the other should be vertical. Put right sides together. Stitch all around the perimeter at 1/4" for seam allowance, then cut on the diagonals from corner to corner both ways. You will have 4 units. Press open and turn so the smallest section is in the middle and stitch as a four block. Voila!