The kids and I looked at several examples of polygons and non-polygons, then the kids paired up and, by examining the shapes that were polygons, determined what rules a polygon must follow. We made a list of our rules in our journals, then the kids were given 12 shapes to categorize as polygons or non-polygons. We added those to our journals as well.
I'm a wife, mother of two, and 4th grade teacher who is totally in love with her job! I teach math and science to roughly 40 kids a year. I've tried to model my classroom after this quote by Elliot Eisner - "When the joy is in the journey, the journey will be pursued." I feel very fortunate to work in an amazing school district, where it is commonplace to push students to their full potential and settle for nothing less. I truly feel blessed!!