What the hell, man?

A few days ago, I was in my Bio class. Our teacher was starting a lesson on the nervous system. We hadn't done anything about this prior to the class. This was completely new material.
During the lesson, she asked us a question about how a nerve cell works or something like that. Of course, nobody knew the answer because this was our first day learning about this subject. For some reason, she got pissed at us at this point, and she said that we "rely on [her] too much to teach [us] the material."
Well, yeah, we rely on you to teach us the fucking material -- you're the fucking teacher, for G-d's sakes! What is wrong with you? How is it our fault that you haven't taught us any of this?
Can anyone explain to me how a teacher can blame her students for not learning something she hasn't taught? This is seriously pissing me off!
During the lesson, she asked us a question about how a nerve cell works or something like that. Of course, nobody knew the answer because this was our first day learning about this subject. For some reason, she got pissed at us at this point, and she said that we "rely on [her] too much to teach [us] the material."
Well, yeah, we rely on you to teach us the fucking material -- you're the fucking teacher, for G-d's sakes! What is wrong with you? How is it our fault that you haven't taught us any of this?
Can anyone explain to me how a teacher can blame her students for not learning something she hasn't taught? This is seriously pissing me off!