It's difficult......

Haiz...today we got back our math assignment. And there are numbers of mistake that lecturer marked and we think it shouldn't be the mistake....Overall, i think we actually do not did anything wrong!
Not only our group, but it same goes to other groups as well. Lecturer do not clarify things early and do not explain to us in details what are the different or similarity betweent the math concepts. For instance, until today only we knew the one-to-one correspondance is actually the same as matching concepts. Things that confuse us are why she explains the concepts separately to us and doesn't said that both concepts are the same??!!!! Until everyone did the mistake only she blame us keep making the same mistake..WHAT'S THAT..!!
Not only that, for the lesson plan part, we are using the format and words that english lecturer taught us in this math assignment. But, our lecturer said it was wrong and gave us 0m for that part. Total got 8 parts, lets count how many marks have we lost? Is that fair?
We are standing in the same position and having the same perception with other lecturers. But only HER....we having difficulty to communicate with her. My friend gave me an example. Just like when i'm saying 'cup' and u are saying 'cawan', both are the same thing, but we do not understand each others.
We dont understand what she wants, and she dont understand what we did.........