if you arent interested in Maths you shouldnt ave done that
since your academic interest isnt the topic of the thread, ill get to the point

1: the site says that there homework content is RANDOM
2: almost all the site is done in flash

given together there are 2 ways to solve your prob
either to exploit the question base [but this might not be of use if the questions are truly random genereated as stated]
or to dissemble the file [again not useful if the swf is checking for validity with server]

since we cant really have a defined url to try at least sql injection + through all the security of flash it wont be productive at all

you can try on dissembling, simply download and use a flash extractor
but i think learning the stuff would be the easiest