Historic St. Mary’s City archaeology, lecture by Ruth Mitchell and Timothy B. Riordan, archaeologists from Historic St. Mary’s City. 6:30 p.m., 18751 Hogaboom Lane. Free. 240-895-4990, www.hsmcdigshistory.org or email@example.com.
Lexington Park art reception, for students of the Yellow Door Art Studios. 5-7 p.m., Lexington Park Library, 21677 FDR Blvd. Free. 301-863-8188.
Department of Aging program, information on programs and services. 5-7 p.m., Leonardtown Library, 23250 Hollywood Rd., Leonardtown. Free. 301-475-4200, Ext. 1073.
St. Maries Musica a cappella concert, in the Brick Chapel of 1667. 7 p.m., Historic St. Mary’s City, 18751 Hogaboom Lane. Free. 240-895-4990 or www.stmaryscity.org.
Women and Math, keynote speaker Debra Salamon will discuss math opportunities for women. Workshops, discussions and lectures. Breakfast and lunch served. 8:30 a.m.-3:30 p.m., College of Southern Maryland, La Plata Campus, 8730 Mitchell Rd. Free. 301-934-7808 or firstname.lastname@example.org.
Asian and Pacific American Heritage Festival, and talent show. Traditional drummers and dancers from Korea and local performing artists; sponsored by the Korean American Cultural Arts Foundation and Charles County Arts Alliance. 2-6 p.m., Thomas Stone High School, 3785 Leonardtown Rd., Waldorf. $5. 888-275-3617.
Calvert Garden Club plant sale, to benefit community projects. 9 a.m.-noon, Historic Linden House, 70 Church St., Prince Frederick. www.calvertgardenclub.com or 410-610-1787.
Medication Take-Back Day, take unused prescriptions to the locations below to prevent the abuse of prescription drugs. Sponsored by the Prescription Drug Abuse Abatement Council and the Calvert Alliance Against Substance Abuse, 10 a.m.- 2 p.m. Locations: Calvert County Sheriff’s Office, Prince Frederick; Maryland State Police Barrack U, Prince Frederick; Mount Hope Community Center, Sunderland; Northeast Community Center, Chesapeake Beach; and Southern Community Center, Lusby. 410-535-3733,
Chesapeake Beach Family Fun Fest, to celebrate the Month of the Young Child. Games and other activities, giveaways, lunch and entertainment. 10 a.m.-2 p.m., Beach Elementary School, 7900 Old Bayside Rd., Chesapeake Beach. Free. 410-535-3530 or email@example.com.
Pig and shrimp roast, hosted by American Legion Stallings-Williams Auxiliary Post 206. 4-7 p.m.; dancing, 7-11 p.m., Post 206, 3330 North Chesapeake Beach Rd., Chesapeake Beach. $35. 301-855-6466 or www.alpost206.org.
St. Leonard roast beef dinner, takeout available. 4-7 p.m., Waters Memorial United Methodist Church, 5400 Mackall Rd., St. Leonard. $15; ages 6-12, $7. 410-586-1716.
Recycled art show and auction, to benefit Patuxent Habitat for Humanity. 6:30-9 p.m., Our Lady Star of the Sea Catholic Church, 50 Alexander Lane, Solomons. 301-863-6227 or www.patuxenthabitat.org.
Family skate night, open year-round. 6-9 p.m., Leonard Hall Recreation Center, 23145 Leonard Hall Dr, Leonardtown. $5; skate rental, $2.50. 301-475-4200, Ext. 1804, or www.stmarysmd.com.
Golden Gloves regional championships, champions from Maryland and Washington will face Virginia and North Carolina champions. Winners go to national tournament in Las Vegas. 7 p.m. Waldorf Jaycees Community Center, 3090 Crain Hwy., Waldorf. Admission starts at $25. 301-843-6165.
Flute Society of Washington recital, 2-3 p.m., First Baptist Church of Waldorf, 10045 Bunker Hill Rd. Free. 301-645-6966 or firstname.lastname@example.org.
Flute seminar and master class, featuring flutes, music and accessories on display. 9:30 a.m.-1:50 p.m., First Baptist Church of Waldorf, 10045 Bunker Hill Rd. $20; students, $10. 301-645-6966 or email@example.com.
Volunteer environmental event, Comcast Cares Day, volunteers sought for forest trail rehabilitation, bring a shovel, wheel barrow, gloves and garden tools; plus reading, planting and face painting activities for children. 8 a.m.-2 p.m., Thomas Stone High School, 3785 Leonardtown Rd, Waldorf. Free. 240-515-8558 or www.blce.org.
“Great Derby” roller coaster history, for age 5 and older, a program about the roller coaster that was at the boardwalk along the Chesapeake Bay. 2 p.m., Bayside History Museum, 4025 Fourth Street, North Beach. $2. 410-610-4028, www.baysidehistorymuseum.org or firstname.lastname@example.org.
Chesapeake Community Chorus rehearsal, new singers are sought. No auditions. Concerts benefit charities in Calvert County. 4-6 p.m., North Beach Union Church, 8912 Chesapeake Ave. 301-855-7477 or email@example.com.
Chapman State Park open house, nature walks, membership meeting and tours. 1-5 p.m., at the park, 3452 Ferry Pl., Indian Head. Free. 301-753-6754 or www.friendsofchapmansp.org.
PowerPoint 2010 programs, for adults, learn how to create presentations. 2-4 p.m., Charlotte Hall Library, 37600 New Market Rd., Charlotte Hall, 301-884-2211, and intermediate class, Leonardtown Library, 23250 Hollywood Rd., Leonardtown, 301-475-2846. Basic computer skills needed for both classes. Free; registration required. www.stmalib.org.
Adult Education Program orientation, for anyone 16 and older who would like to earn a high school diploma. 5:30 p.m., Hunting Creek Annex, 4105 Old Town Rd., Huntingtown. Free. 410-535-7382 or www.calvertnet.k12.md.us.
Zumba classes, sponsored by the Mechanicsville Volunteer Fire Department Ladies Auxiliary. Tuesdays and Thursdays. Toning classes, 6-6:45 p.m.; fitness classes, 7-8 p.m., Mechanicsville Volunteer Fire Department, 28165 Hills Club Rd. Toning classes, $5; fitness classes, $6. 301-884-4709 or firstname.lastname@example.org.
St. Mary’s primary candidates forum, for the June 24 election. Meet Maryland state delegate and state Senate candidates. 6:30 p.m., Lexington Park Library, 21677 FDR Blvd. Free. 301-862-1183, www.smc.lwvmd.org or email@example.com.
Library “Game On,” for all ages. Bring an E-rated game and controller to the Wii. Bring a board game or borrow one at the library. 2-3:30 p.m., Calvert Library, 850 Costley Way, Prince Frederick. Free. 410-535-0291 or 301-855-1862.
College “Night of Engineering,” learn about College of Southern Maryland’s mechanical engineering partnership with the University of Maryland and the Naval Air Warfare Center Aircraft Division. 6-7:30 p.m., College of Southern Maryland, 8730 Mitchell Rd., La Plata. Free. 301-934-7747 or firstname.lastname@example.org.
JobSource Mobile Career Center, 9 a.m.-1 p.m., Charlotte Hall Library, 37600 New Market Rd. Free. 301-884-2211 or www.stmalib.org.
Microsoft Publisher 2010 class for age 16 and older, learn about text boxes and graphics. Basic computer skills needed. 2-4 p.m., Lexington Park Library, 21677 FDR Blvd. Free, registration required. 301-863-8188 or www.stmalib.org.
Details: Announcements are accepted from public and nonprofit organizations only and must be received at least 14 days before the Thursday publication date. Include dates, times, exact address, prices and a publishable contact phone number.