Group items tagged

This is a video looking at equilateral triangles and properties of triangles 

" Come up with a formula that will use the information that matters and then return a number to tell us who did the best and worst job drawing the midpoint." Interesting way to introduce midpoint and assess which formula suggested was "best." There are follow-ups with drawing the best triangle, square, and circle. (I would definitely do triangle & square - teacher's guide shows examining largest areas possible given the perimeter as the best solution!)