Maybe this would be helpfull: http://betterexplained.com/articles/adept-method/ http://betterexplained.com/articles/adept-method/ It's by the author of better

Maybe this would be helpfull: http://betterexplained.com/articles/adept-method/ http://betterexplained.com/articles/adept-method/ It's by the author of better explained - a really great math teaching site.