The Medford Public Library presents “Mathilda’s Bath,” a fun puppet show performed by Margaret Moody Puppets. Best for children ages 3 to 7, the show is a light-hearted adaptation of a Betty MacDonald story told with needle-felted pig puppets. Only Mrs. Piggle Wiggle’s magic can convince the grimy Mathilda to take a bath. Registration is required; sign up through the library’s online calendar.