I'm a geography teacher, and today I was suddenly notified by the school to replace the biology class for two days, and I looked at the textbook to talk about reproductive organs and development. Oh my God, my Ben

I'm a geography teacher, and today I was suddenly notified by the school to replace the biology class for two days, and I looked at the textbook to talk about reproductive organs and development.

My God, I'm a little thin-skinned, how embarrassing I am, I don't know how to speak, if I don't talk about letting students study by themselves, it's not responsible.

Friends, is there any good way?