Mean, Median, Mode, and Range Games:
http://www.kidsmathgamesonline.com/numbers/meanmedianmode.html
http://www.mathgames.com/skill/6.91-calculate-mean-median-mode-and-range
http://www.turtlediary.com/game/mean-median-mode-range.html
Ratio Coloring:
http://www.softschools.com/math/ratios/ratio_coloring_game/
Ratio Eater:
http://www.mathplayground.com/ASB_RatioMartian.html
Dirt Bike Ratios:
http://www.mathplayground.com/ASB_DirtBikeProportions.html
Solving ratio/rate problem videos:
https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/rates_tutorial/v/usain-bolt-s-average-speed
Circle Graph Creators:
http://www.rapidtables.com/tools/pie-chart.htm