Amyah Toney, a student in Jennifer Heady’s third-grade class at Carlisle Elementary School, discusses a 19th-century mousetrap with Diana Williams, a volunteer at the Delaware County Historical Society and a former third-grade teacher at Carlisle. Williams, along with Brent Carson and T.K. Cellar, also volunteers at the historical society, were presenting artifacts from the past and asking students if they knew what the artifacts were.