Since last year, I couldn't understand the way she explains. Then when she wants me to answer a question on the board, I reject everytime and tell her how I don't understand the lesson. After that, she has built this obvious difference between me and my bestfriend, who she really likes. Her intonation changes when she talks to me, and now most of all, she offended me with her words like once she told how 'lazy' I am, or, just today, how 'Im so slow on understanding something'. Now how am I able to participate and work with her at the board if she understimates me every, single, time? I'm in my senior year. I don't know how to go through this, how to answer on the board a question from maths or physics or chemistry, since Im just not used to this. And how to get the ideas, and answers fast when something, some question is completely new to me? Im having these troubles in addition to her understimating me, I feel so stupid in physics. So much to the point where Im believing it.

Ps. She can't take her eyes off me when it's about doing a correction of an excercice on the board. It's like Im the only one in the classroom!? Why does she keep on interrogating me, when there are so many others who she never bothers? Who have never answered on the board just like me?

Please help. I dont know how to deal with this.