In a nature story befitting Halloween, fourth-graders at the Jaffrey Grade School have discovered that cemeteries are the perfect place to study the weathering of rocks! Their inquiry-based lessons begin in the classroom, where the students conduct experiments exploring chemical and mechanical weathering. Then — accompanied by a skilled Harris Center naturalist — they walk to the Village Cemetery for in situ investigation of a research question of their own choosing. This year, fourth graders in Marianne Sorrentino’s class recorded the age and stage of weathering of over 100 tombstones (some over 180 years old!), and discovered that marble tombstones weather more quickly than those made of slate. To learn more, read the story in the latest Harris Hearsay or visit our Flickr set of students engaged in their graveyard research.