I have just created a NEW CHART about the difference between FOR and SINCE in English:
More details about this difference, see out grammar notes here:
http://www.grammar.cl/Notes/For_Since.htm
(On that grammar page we also have a PDF with exercises you can complete)
Once you have read the notes, try our game:
http://www.grammar.cl/Games/For_Since.htm
I hope you find this useful.
