Sexual Interaction?

I'm a year 8 girl and my school have decided to manufacture us all revise about the above mentioned topic!! I missed my PDHPE class on the year they were discussion about it, and I can't be stuffed to ask my coach. Plus, it would be embarrassing, coz my trainer is a guy... and... yes. Its self-explanatory. Please explain the whole point - climax, etc.
Thanks so much and I'm sorry to do this to you!!Sexual Interaction?
don't you have a mother?!
Ask you're parents or if you can't do that merely have a chat beside you're friends
hmmmm. you write really well for an 8 y/o.