The website below is just one game that you could go to, to help you with our standard. In order to go to this game you must press on the button that says " Click Here ". This will lead you to the game that has to do with rates.
http://www.ixl.com/math/grade-8/convert-rates-and-measurements-customary-units
This game has to do with speed and rate because if you are not carefull with the speed or rate that your going at you will not make it to the end.
http://www.primarygames.com/arcade/skill/gyroball/