Concerts SCOTT HELLAND -- 7:30 p.m. tomorrow. An acoustic instrumental performance with punk undertones. Borders, 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 square dance club the Southern Merry-Landers, at John Hanson Middle School, 12350 Vivian Adams Rd., Waldorf. $5.50; members, $4. 301-893-1974.

Exhibits ART WITH HEART -- 11 a.m.-5 p.m. Wednesdays-Fridays and 11 a.m.-4 p.m. Saturdays, through Feb. 15. "Heart's Desire" features new terra cotta clay designs by Parran Collery, hand-painted silk by Karen Russell, glass by Jerry Hovanec and Ruthann Uithol, an installation titled "Happy Light Surprise" by Nancy Klapper, and other works by gallery artists. Main Street Gallery, 486 Main St. Prince Frederick. Free. 410-535-3334.

"SITUATION ROOM" -- 11 a.m.-5 p.m. weekdays, noon-3 p.m. Saturdays, through Feb. 27. Photographs by Colby Caldwell and James Huckenpahler, and paintings by Jason Gubbiotti. Boyden Gallery, St. Mary's College of Maryland, 18952 E. Fisher Rd, St. Mary's City. Free. 240-895-4246.

HIGH FIVE -- 11 a.m.-4 p.m. tomorrow and Saturday. Students from five area high schools display their art, chosen by teachers. Mattawoman Creek Art Center at Smallwood State Park, Sweden Point Road, Marbury. Free. 301-743-5159.

CREATURES GREAT AND SMALL -- 11 a.m.-4 p.m. Fridays-Saturdays, through March 2. The gallery shows works by member and invited guest artists. Mattawoman Creek Art Center at Smallwood State Park, Sweden Point Road, Marbury. Free. 301-743-5159.

TAKAKO NAGAI -- Noon-5 p.m. Mondays and Wednesdays; 3:30-7 p.m. Tuesdays, Thursdays and Fridays; and an hour before College of Southern Maryland performances, through March 2; gallery talk, noon Feb. 18, "Journey: Paintings by Takako Nagai." Tony Hungerford Memorial Gallery, College of Southern Maryland, 8730 Mitchell Rd., La Plata. Free. 301-934-7828, 301-870-3008 or 301-884-8131, Ext. 7828.

For Children KIDS 'N' CRITTERS -- 10 a.m. Saturday and Wednesday. Children 3-5 can join a naturalist for a program about swamp animals involving a hike to look for signs of animals. Reservations are required. Battle Creek Cypress Swamp, Grays Road, Prince Frederick. $3; Battle Creek Nature Education Society members, $1. 410-535-5327, 800-735-2258 (TDD) or www.calvertparks.org.

FAMILY NATURE PROGRAM -- 2 p.m. Saturday. Learn how to recycle paper and make a card. Reservations are required. Battle Creek Cypress Swamp, Grays Road, Prince Frederick. $5; Battle Creek Nature Education Society members, $3. 410-535-5327, 800-735-2258 (TDD) or www.calvertparks.org.

TINY TOT TROT -- 10 a.m. Tuesday. Children ages 2 and 3 play peekaboo to guess which eyes belong to which animal and where each lives. Reservations are required. Battle Creek Cypress Swamp, Grays Road, Prince Frederick. $3; Battle Creek Nature Education Society members, $1. 410-535-5327, 800-735-2258 (TDD) or www.calvertparks.org.

BILLY B -- 9:45 a.m. next Thursday. Songs about natural science for children 3-6. College of Southern Maryland Theatre, La Plata campus, 8730 Mitchell Rd. $5. 301-934-7828 or www.csmd.edu.

Lectures and Literature SANYIKA CALLOWAY BOYCE -- 7 p.m. today. The author autographs copies of "Crack 'Da Code" and gives advice on avoiding financial disaster. Calvert Library, 30 Duke St., Prince Frederick. Free. 410-535-0291 or 301-855-1862.

ALICE MCDERMOTT -- 1:30 p.m. tomorrow. The Daytime Book Discussion group talks about "Charming Billy." Leonardtown Library, 23250 Hollywood Rd., Leonardtown. Free. 301-475-2846.

SEVEN DEADLY SINS -- 7 p.m. Monday. Anne Marie Drew discusses "7 Deadlies." Bayhill Market, 7544 Bayside Rd., Chesapeake Beach. Free. 410-257-2411.

"THE GOLDEN MEAN" -- 4 p.m. Tuesday. Mario Livio, a theoretical astrophysicist and head of the Science Division at the Hubble Space Telescope Science Institute, talks about how disparate phenomena share a special number or geometrical proportion known as phi. A book signing follows the lecture. Schaefer 106, St. Mary's College of Maryland, 18952 E. Fisher Rd, St. Mary's City. Free. 240-895-4381.

CELEBRATE STEINBECK -- 7 p.m. the third Thursday of each month, through April. Brush up on your Steinbeck over the coming months with a discussion series devoted entirely to the chronicler of the Dust Bowl and Great Depression. Naval Academy English professor Mark McWilliams leads discussions of "Cannery Row" in February and "Grapes of Wrath" in March and April. Registration is suggested. Calvert Library, 30 Duke St., Prince Frederick. Free. 410-535-0291 or 301-855-1862.

Sports and Recreation FIELD TRIP -- 10 a.m.-4 p.m. first Sundays of the month. Eradicate alien invasive plants from most of the old growth area of Chapman's Forest. Participating organizations include the Maryland Native Plant Society and Sierra Club. Bring gloves, lunch and water. Meet at Swann Park/Potomac Branch Library, Indian Head Highway, Indian Head. Free. 301-283-0808 or ialm@erols.com.

Theater "SPINOFF" -- 6:30 p.m. doors open, 7 p.m. buffet, 8 p.m. curtain tomorrow, Saturday and Feb. 14 and 15. The Alumni Players hold their annual dinner theater production catered by Thompson's Seafood. Reservations are required. Our Lady Star of the Sea Church, 14400 Solomons Island Rd. S., Solomons. $30. 410-326-2050.

Miscellaneous MARDI GRAS BALL -- 9 p.m.-1 a.m. Saturday. Civista Health Foundation sponsors a New Orleans-style ball with entertainment by Highway Star, a 10-piece brass band. Middleton Hall, 4045 Renner Rd., Waldorf. $80. 301-609-4132.

WEEKLY AUCTIONS -- 6 p.m. Fridays. Chesapeake Auction House, 5015 St. Leonard Rd., St. Leonard. Free. 410-586-1161, 800-286-0033 or www.chesapeakeauctionhouse.com.

Plan Ahead

NAVY BAND -- 8 p.m. Feb. 14. The concert band performs works by Tchaikovsky, Mozart, Jacques Press and John Philip Sousa, as well as a Gershwin medley and a love song from "The Godfather." Fine Arts Center, College of Southern Maryland, La Plata campus, 8730 Mitchell Rd. Free. 301-934-7828.

UNITED WAY MARDI GRAS -- 6:30-11:30 p.m. Feb. 15. The United Way's (black tie optional) gala event includes live entertainment by the Rhythm Road Band, a silent auction and a King and Queen crowning ceremony. Show Place Arena, Route 4, Upper Marlboro. $75. 410-286-0100.

MODEL GRAND PRIX -- 9:30 a.m. Feb. 22. The AWANA (Approved Workmen Are Not Ashamed) Club of First Baptist Church of Calvert County hosts a model car race open to adults and children in kindergarten or older. To participate, you must purchase the official AWANA wooden car kit and assemble it at home. Trophies will be awarded for speed and design. First Baptist Church of Calvert County, Route 4, Prince Frederick. Kit, $3. 410-535-1669 or 410-535-3325.

CAPITOL STEPS -- 7:30 p.m. Feb. 28. The political satire performance is sponsored by the Calvert Alliance Against Substance Abuse. Proceeds benefit Project Graduation 2003. Tickets are available at all Calvert Bank branches, Richard's Bayside Florist, and Educate & Celebrate. Mary Harrison Cultural Arts Center, Northern High School, 2950 Chaneyville Rd., Owings. $20 in advance, $25 at the door. 410-535-3733.

NORTH CAROLINA TRIP -- March 14-17. Final payment is due Feb. 14 for a trip to North Carolina for a ride on the Great Smoky Mountain Railroad, the Cherokee Indian Museum, Biltmore Estates & Winery, and Harrah's Casino. Trip includes three nights hotel, meals, bus, snacks, tours and admission fees. Departs from Hollywood, Waldorf and La Plata. $320. 301-884-8728, 240-925-0801 or 301-737-0620.

-- Carrie Donovan

The Southern Maryland Extra Entertainment Calendar lists events as space permits. Mail announcements and photos -- noting date, time, address, cost and phone number -- to Carrie Donovan, Southern Maryland Extra, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071. You may also e-mail announcements to donovanc@washpost.com or fax them to 202-334-5417. Deadline is 14 days before publication.