What’s your function?

JAM
Schoolhouse Rock Sing-Along
What: Like Tyra Banks and Neil Patrick Harris, everyone’s favorite educational animated shorts are turning 40. Celebrate four decades of conjunctions, times tables, and legislative processes by proving you know all the words at a free concert.
Why: “I’m Just a Bill” sparked your professional ambitions.
When: Sun., 6 p.m.
Where: John F. Kennedy Center, 2700 F St. NW, at 25th St. (202-467-4600).

CHILL
Phillips After 5: Arctic Expedition
What: Inspired by the soon-to-close study of Denmark’s best-known living painter, Per Kirkeby, the happy hour (nonmembers, $12; students, $10) offers offbeat activities, including an interactive challenge using Legos (invented in Denmark).
Why: Sip New Belgium Brewing Company samples of Fat Tire Amber Ale, Snow Day Winter Ale, and Trippel Belgian Style Ale.
When: Tonight, 5-8:30 p.m.
Where: The Phillips Collection, 1600 21st St. NW (202-387-2151). Reservations at phillipscollection.org.

SLICE
January Special at Pizzeria Paradiso
What: One eight-inch pizza (either off the menu or a Paradiso plus two toppings) and any two draft beers are $20.13 all month.
Why: Finally solve the square root of pie.
When: Thru Jan. 31. Mon.-Thurs., 11:30 a.m.-10 p.m.; Fri. & Sat., 11:30 a.m.-midnight; Sun., noon-10 p.m.
Where: 124 King St., Alexandria (703-837-1245).

WATCH
Washington Jewish Film Festival
What: Catch 55 films from fifteen countries (Israel, Australia, Argentina, Nigeria) that chronicle the Jewish experience in big budget, documentary, and cartoon form.
Why: Special events include a Q&A with Elliott Gould and dueling DJs playing “Hava Nagila.”
When: Thru Jan. 13. Schedule online.
Where: Washington D.C. Jewish Community Center, Aaron & Cecile Goldman Theater, 1529 16th St. NW, b/t Church & Q Sts. (202-777-3241). Tickets (individual, $11-$25; festival pass, $30-$75) at washingtondcjcc.org.

LISTEN
An Iliad
What: Cling to the edge of your seat for 90 minutes as Scott Parkinson, accompanied by a single musician, casts Lisa Peterson and Denis O’Hare’s adaptation of Homer’s 2,800-year-old war tale.
Why: Follow up the intermission-free play with a winetail at Estadio across the street.
When: Thru Jan. 13. Tues.-Fri., 8 p.m.; Sat., 2 & 8 p.m.; Sun., 2 & 7 p.m.
Where: The Studio Theatre, 1501 14th St. NW (202-332-3300). Tickets ($39-$61) at studiotheatre.org.

LICK
January Custard Calendar
What: Swoon over spoonfuls of seven daily rotating frozen custard flavors like Pretz-idential Caramel (Mondays) and Mom’s Coconut Cake (Thursdays).
Why: Kick your resolution to the curb.
When: Thru Jan. 31. Sun.-Thurs., 11 a.m.-11 p.m.; Fri. & Sat., 11 a.m.-midnight.
Where: Shake Shack, 1216 18th St. NW, at Connecticut Ave. (202-683-9922).

Photo: Courtesy of the John F. Kennedy Center for the Performing Arts