Who taught Anne Frank maths? Why did the maths teacher always get annoyed with her?

Who taught Anne Frank maths? Why did the maths teacher always get annoyed with her?

Answer: Mr Keesing taught her maths. He always got annoyed with her because she talked too much in the class. To stop this practice, he also gave her to write an essay on ‘An Incorrigible Chatterbox’ as punishment. Even then she did not stop talking. That is why Mr Keesing always got irritated.