I'm failing math and it's not even my fault!?

I sit in the back in my math class, and I have a 66%! It's an advanced class, the material isn't that hard, but the thing is that the teacher goes wayyyy to fast, plus I can't see the board! Then, since I don't know what to do, I can't do my homework! So that brings my grade down. Then, I fail tests! She goes too fast! And everyone in that class hates it, but she still goes fast. She evn told us one time, "i just want to get chapeter 5 done and over with" so she rushed through, teaching us new stuff every day. And I am not a lazy student. How do I have 97% in Science and a 94% in Civics, and a 88% english, but a failing 66% for MATH!? What should I do? I only have 8 days left, and 66% is only my quarter four average, not entire year average. Should I just... try hard now and thank God that I only have 8 days left?