Backyard Clay (ceramics) classes for children 7 to 10. Ninety minutes of play and instruction. Tuesdays and Thursdays 10:30 a.m. to noon. Starting Tuesday, June 30. Two classes per child includes materials and firing. Made possible by a grant from the Town of Groton’s Lecture Fund. Instructor: Katharine Bell. Location: 68 Common Street. For more information call 978-448-6690.