I remember the frustration and the tears (!) associated with not being able to solve a problem or to find out some fact or method for maths (mathematics) problems, chemistry or physics. The Internet makes it so easy now. I was reading the New York Times article about these websites out there which help you out in "unravelling the mysteries of complex math and science problems.". You've got so many tools. Being stuck on a problem and the frustration of having to wait the next day to learn from your teacher the method is now a thing of the past. If you need homework help you just need a little initiative to go visit one of these websites and ask them on how to solve your particular problem.
Homework help. Bah! First start off with Google. If its a science related problem - like maths or physics give the newly launched Wolfram Alpha a try. And if you are an Engineering student, or if you love Mathematica - you'll love Wolfram Alpha!. Now, getting more to the point, you've got a popular site called Cramster which is an "Online Study Community". Other homework help websites are: Koofers which provides (shares) lecture notes, Spark Notes (owned by Barnes and Noble) and Course Hero. Good Luck with your maths problems!