Honestly there is too many to list, just to name a few, she got her pin from a girl named Madge, who was the mayor's daughter. Also Peeta ends up loosing a leg at the end of the book. Lavinia is an Avox girl in the capital, that waits on Katnis and the rest of district 12.
You do not hear about how she got there, while in the book it is revealed that Katnis saw her running in the woods and getting caught by a hovercraft ship from the capital. It is also not explained that they are not to be talked to and that they themselves can not talk because as Avoxes/slaves they have there tongues cut out. However, the teacher could ask any number of question that revolve around what was going on in Katnis' head though out the book and they are not in the movie These are a few differences were there are many, however because in my opinion there are too many to mention it is better to read the book, It was so much better and really fast to read.
Also I believe if your teacher gave you quiz on the book, you might fail it because she may think that people are seeing the movie and purposefully choose question that are only in the book.
The beasts that attack them at the end were supposed to be the previous players in the 'dogs' bodies. The film doesn't show that. In the book, Katnis makes peeta fall asleep by drugging him.
Peeta gets blood poisoning and they don't show the avox girl. There's probably lots more but I can't remember them. The book is MUCH better than the film.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.