Welcome, Jayce!
We can give you some place to look for your answers, but we can't answer your questions directly. As it says when you come into the forums, 'we won't do your homework for you'. The answers to your questions can be found by reading Lewis' essay 'On Three Ways of Writing for Children', found in the essay collections Of Other Worlds, Of This and Other Worlds, and On Stories. It's also in the omnibus adult edition of the Chronicles of Narnia, the one pictured below. You should be able to find one of those four books in a school or public library.
Hope this helps.
Selah,
Sven