Concerts

STEVE POTTER -- 7:30 p.m. tomorrow. Steve Potter of the Grotto Boogie Kings will share his personal brand of the blues. Listen to music from his new solo release "Grotto Says!" and to his harmonica stylings in vintage shuffles and swings. Borders Books and Music, 3304-A Crain Hwy., Waldorf. Free. 301-705-6672.

Dance

AQUA SQUARE DANCING -- 7:30-9:30 p.m. every Friday. The Aqua Squares Square Dance Club of Calvert County holds a dance at the Southern Community Center, 20 Appeal Lane, Lusby. $5. 410-326-2676 or 301-373-2207.

MERRY-LANDERS SQUARE DANCING -- 7:30-9:30 p.m. every Friday. Dances are held by the Southern Merry-Landers square dance club at John Hanson Middle School, 12350 Vivian Adams Rd., Waldorf. $5.50; club members, $4. 301-893-1974.

SPRING BALL -- 6 p.m. Wednesday. Semi-formal dinner/dance for senior citizens. Menu features chicken, vegetable, mashed potatoes, salad, coffee, tea and dessert. A deejay will play tunes of yesteryear and today. Patuxent High School, Lusby. Free. 410-586-2748.

For Children

EARTH DAY CELEBRATION -- 10:30 a.m. Wednesday. Learn about yourself and the world as you celebrate Earth Day. Borders Books and Music, 3304-A Crain Hwy., Waldorf. Free. 301-705-6672.

KITE CONTEST -- 10 a.m.-2 p.m. Saturday. For all ages. Awards in several categories. Kites available or bring your own. Refreshments provided. Jefferson Patterson Park and Museum, Mackall Road, St. Leonard. Free. 410-257-3305, 410-586-8501 or visit www.jefpat.org.

KIDS 'N' CRITTERS -- 10:30 a.m. and 2 p.m. Tuesday. Children 3-5 can explore the transformation of tadpoles into frogs. Battle Creek Cypress Swamp, Prince Frederick. Battle Creek Nature Education Society members, $1; nonmembers, $3. 410-535-5327 or 800-735-2258 (TDD).

NATURE EXPLORERS -- 2 p.m. Saturday. For children 6-9. Join a naturalist and learn about water and the creatures that live in it. 2 p.m., Flags Pond Nature Park, Lusby. Battle Creek Nature Education Society members, $1; nonmembers, $3. 410-535-5327 or 800-735-2258 (TDD).

EGG HUNT -- 10 a.m. Saturday. For children 10 and younger. Activities include face painting, crafts, a visit from the Easter Bunny and an egg hunt. Proceeds to benefit Smallwood State Park volunteers. Smallwood State Park, Marbury. Suggested donation, $2. 301-743-7613.

For Seniors

PASTEL DEMO -- 10-11:30 a.m. Tuesday. Jean Hawkins-Rogers will show how easy it is to use pastels as a painting medium. Learn about a variety of papers and pastels. Several paintings will be on display. Southern Pines Senior Center, 20 Appeal Lane, Lusby. Free. 410-586-2748.

SPRING GARDENING CLASSES -- 2 p.m. today. Gardeners Jean Radeackar and Bill Hopkins will present the class, which meets the third Thursday of each month. Southern Pines Senior Center, 20 Appeal Lane, Lusby. Free. 410-586-2748.

Lectures and Literature

"LOCATION, LOCATION, LOCATION" -- 8:30-10:30 a.m. next Thursday. Baldus real estate agent Mary Shasho will discuss the various aspects of leasing business space, including leasing terms, loopholes, financial obligations and more. Sponsored by the Women's Business Institute. Center for Business and Industry, College of Southern Maryland, La Plata campus. 800-762-7232 or 301-934-7581.

Theater

"ORDINARY MEN WITH AN EXTRAORDINARY GOD" -- 7:30 p.m. tomorrow and Saturday. An Easter production telling the story of Christ from the disciples' point of view. Southern Calvert Baptist Church, H.G. Trueman Road, Lusby. An offering will be accepted. 410-326-6533.

"LOVE'S LABOUR'S LOST" -- 8 p.m. April 24-26 and 2 p.m. April 27 and May 4. Shakespeare's romantic comedy directed by Michael Ellis-Tolaydo. Bruce Davis Theater, Montgomery Hall Fine Arts Center, St. Mary's College of Maryland, St. Mary's City. $5 general admission; $3.50 for faculty, students, staff, senior citizens and art alliance members. 240-895-4243 or e-mail the box office, boxoffice@smcm.edu.

Miscellaneous

EASTER BRUNCH -- 10 a.m.-4 p.m. Sunday. Large groups welcome. Maryland Way Restaurant, Holiday Inn Select, Solomons. Adults, $22.95; children 5-12, $11.50; 4 and younger, free. 410-394-3618.

LADY'S NIGHT -- 6-9 p.m. next Thursday. Enjoy popcorn and a movie while painting a popcorn bowl. Finished bowls will be displayed and judged. Winners receive a $20 gift certificate. Bowls may be taken home after judging. Registration suggested. Paint'N Pottery Studio, Huntingtown. $40. 301-855-8000 or 410-257-2207.

APRIL SHOWERS BRING MAY FLOWERS -- 10 a.m. Saturday. Families can join a naturalist and explore the trails for wildflowers in bloom. Flags Pond Nature Park, Lusby. Battle Creek Education Society members, $1; nonmembers, $3. 410-535-5327 or 800-735-2258 (TDD).

EASTER EGG HUNT AND FESTIVAL -- 10 a.m.-1 p.m. Saturday. Family fun includes hunts for all ages, carnival attractions and food. On the lawn of the Governmental Center, Leonardtown. $1 to participate in an egg hunt. 301-475-4572.

Sports and Recreation

GOLF TOURNAMENT -- 9:30 a.m.-7 p.m. Wednesday. Four-person format, captain's choice. Contests, individual and team prizes. Proceeds benefit the United Way of Charles County. Sponsorship available. Swan Point Yacht and Country Club, Swan Point. $125 per player. 301-609-4844.

Plan Ahead

"GALA BY THE BAY" -- 6:30 p.m.-1 a.m. May 16. Register by April 25. Sponsored by the Concerned Black Men of Calvert County Inc. The CBMCC will award a $1,000 scholarship to a senior from each high school in the county. Proceeds will support the annual scholarship banquet and activities the organizations provides for the community. Sponsorship and door prizes are requested. Tickets include a reception, dinner, guest speaker, awards, acknowledgement and live entertainment. Rod 'N' Reel restaurant, Chesapeake Beach. $50 a person. 410-414-5009.

GOLF TOURNAMENT AND LUNCHEON -- 8 a.m. April 25. Sponsored by the Dunkirk Warriors Boys and Girls Club. Golfers and sponsors needed. Doughnuts served before tee-off. Eighteen-hole "Super Ball" tournament (scramble format). Refreshments and beverages available on the course. Hole-in-one, longest drive and putting contests. Complete lunch and awards ceremony immediately following the tournament at Twin Shields Pavilion. Twin Shields Golf Course, Dunkirk. $100 per golf tee or green sponsorship; $50 for business card sponsorship; $75 per golfer or $300 per foursome (individual golfers will be placed in a foursome). 301-855-5964, 301-343-0709 or visit www.dunkirkwarriors.com.

MEET THE LIGHTHOUSE KEEPER -- 10 a.m.-4:30 p.m. April 26 and 27. The keeper and his wife can be seen "at home." Visit them and learn what life was like in Solomons in 1918 and what daily duties were performed to keep the lighthouse in top shape. Drum Point Lighthouse, Calvert Marine Museum, Solomons. $5. 410-326-2042, Ext. 32.

-- Bonnie Smith

The Southern Maryland Extra Entertainment Calendar lists events as space permits. Mail announcements and photos -- noting date, time, address, cost and phone number -- to Bonnie Smith, Southern Maryland Extra, The Washington Post, 100 N. Oak Ave., La Plata, Md. 20646. You may also e-mail announcements to smithbs@washpost.com or fax them to 301-934-1088. Deadline is 14 days before publication.