Math fluency practice http://resources.oswego.org/games/SpeedGrid/Multiplication/urikamultires.html
Multiplication games (tons of fun) http://www.multiplication.com/interactive_games.htm
sort regular and not regular polygons and quadrilaterals and not quadrilaterals shape sorter
Sort triangles according to their side lengths. Triangle sort
learn the facts about different polygons Learn about Polygons!
an interactive vdeo in finding the right shapes
find the quadrilateral