The Devil's Arithmetic

 The Devil's Arithmetic by Jane Yolen is 176 pages long. It is about a 12 year old girl named Hannah Stern . She is  Jewish  and during the Passover Seder, she is transports to 1942 Poland, where she becomes Chaya (her name in Hebrew). When she arrives she meets Rivka, a girl around her age. They soon get ready for there uncle's wedding. As soon as they get there, they are captured by the Nazi's and only Hannah knows the horrible things that will happen when they get there. The Nazi's decide to put some of the girls in the gas chamber where they will be choked to death. Rivka is chosen to be killed and Hannah is brave and takes her place along with the others. As soon as the gas chamber kills her she wakes up on the floor in the Passover Seder. Everyone is is around her when she notices the number on her grandmothers arm. She realizes it is the same number Rivka had.