That is weird, deadass. I have friends who are trying to get teacher/professor degrees and they're being instructed to always explain the assignments as throughouly as they can to the students. Not sure what your professor has learned.
I think you should contact people of higher status like the principal or the dean. They can maybe talk the teacher into teaching in a more effective way. I wonder, does your teacher respond to emails? I usually get in contact with my professors that way.
For my very first assignment from the book, I had to make some calculations and I wanted to know how to make a few of the calculations that I got wrong after I submitted my answers. I emailed her asking her if she can share with the class the answers, showing us how to calculate to get the answer. She never did though and she said she would once everyone has turned in the assignment.