EXHIBIT OPENS, “Cephalophoric Smugglers,” through June 7; opening reception tonight, 5 to 7 with artist talk by Paul Endres at 5 p.m. Essex Art Center, 56 Island St., Lawrence; 978-685-2343, email@example.com.
FREE MOVIE, Screening of “The Garden” in honor of Earth Day, 7 p.m., Unitarian Universalist Congregation, 6 Locke St., Andover; 978-475-4454. Popcorn provided, bring a portable chair.
SATURDAY, APRIL 27
VALE TRAIL DEDICATION, MBTA Ballardvale parking lot, 2 p.m., hosted by Andover Village Improvement Society; public invited, free.
SPAGHETTI AND MEATBALLS, 4:30 to 6:30 p.m., Trinitarian Congregational Church, 72 Elm St., North Andover, $7 to $9.
WORLD TAI CHI DAY, annual event held worldwide the last Saturday in April, 10 a.m., parking lot behind Yang’s Fitness Center, 5 Dundee Park; public invited, no experience required; visit www.worldtaichiday.org.
COOKIE SALE, 9 a.m. to 1 p.m. Andover Baptist Church, 7 Central St., containers are $5, fill with cookies.
SUNDAY, APRIL 28
CAMP OPEN HOUSE, Camp Maude Eaton in Andover invites girls in grades 1 to 10 who want to spend their summer swimming, canoeing and singing around the campfire, 1 to 4 p.m. Camp tours and program information available. hercamp.org, 617-350-8335. Free bus pick-up this summer at West Parish Church, 129 Reservation Road and Shawsheen Plaza. Open house also on May 19.
LIVE ORGAN MUSIC, Guest artist will be internationally acclaimed organ soloist Douglas Major, 4 p.m., Christ Church, Central Street; $15 adults, $10 seniors/students.
LIVE MUSIC, Andover Choral Society presents “An Afternoon at the Opera,” 3 p.m., Rogers Center for the Arts at Merrimack College, North Andover, $20; 978-682-4050, andoverchoral.org.
LIVE BALLET, Dance Prism presents “Don Quixote” at the Collins Center in Andover, 2:30 p.m., $24 adults, $18 children and seniors; danceprism.com, 978-371-1038.
SPRING FLING DANCE, Dance instruction by Dance New England and music provided by DB’s Orchestra; complimentary light refreshments and a cash bar; 6 to 11 p.m., Town House, 20 Main St., $10 advance, $15 door for singles, $25 couple; tickets in advance at The Center and The Andover Bookstore; 978-623-8321.