Everything you need to understand or teach Many Waters by Madeleine L'Engle.
"Many Waters" by Madeleine L'Engle tells the story of teenage twin brothers, Dennys and Sandy. The boys don't realize there is an experiment in progress in the lab. They are transported to a new place and era and they must figure out how to get back to their home and time.
Dennys and Sandy are ready for some warmth as a break from the cold March storm. In their mother's lab...