1. Make as many polygons as you can using playing cards to tell you how long the sides have to be.
Build a polygon
2. Play tic-tac-toe while reviewing the traits of polygons.
Polygon Tic-tac-toe
3. Teach symmetry with "negative" space.
Symmetry
4. Symmetry worksheet
Draw the lines of symmetry
5. Geometry PowerPoints
PowerPoints