Everything you need to understand or teach Loch by Paul Zindel.
Loch is a suspenseful tale of adventure involving lake monsters and the effort to capture them. These lake creatures, elusive survivors from the age of the dinosaurs, are closely related to the ocean-going giant reptiles called plesiosaurs. They are surprisingly intelligent creatures, which may account for how they have managed to evade human beings for thousands of years. The novel tells of how three young people encounter the giant reptiles as they come into violent and deadly conflict with human beings.(read more)