Coraline follows a young girl in a new house as she explores and encounters dangerous creatures, including her other mother. It would be a perfect Halloween time story for upper grades. For a lesson, the students could create tales for the other children in the other mother's grasp, or a backstory of the other mother herself. This would allow their creative juices to flow, as well as being great practice for narrative writing. If you wanted to practice persuasive writing, the students could write why Coraline should have stayed, and why the other mother really isn't as bad as she seems.