This is a free 3rd grade geometry math activity that includes a game I use to give my students practice classifying shapes in my classroom. Students practice with the following geometry terms: quadrilateral, polygon, rectangle, closed figure, parallel sides, pentagon, hexagon, octagon, square, trapezoid, right angles, parallelogram, and rhombus.Check out the full Geometry Unit HERE!I use these activities in my classroom to teach geometry each year.This sample game is called "I'm the Best Polygon