Saturday:
SHINE A LIGHT: Hanukkah, oh Hanukkah, come light the menorah with Moey’s Music Party at the JCC. Not only is the concert free, the first 150 families will get the award-winning Moey’s Music Party CD as a Hanukkah gift. 2:30 to 3:30 p.m. 334 Amsterdam Ave. at 76th Street, moeysmusicparty.com
FLOWER POWER: Catch Grammy-nominated Elizabeth Mitchell and You Are My Flower live at Symphony Space in a highly anticipated show. Symphony Space members can stick around after the show to decorate holiday cookies. 11 a.m., $15 for kids, $25 for adults. 2537 Broadway, at 95th Street; 212-864-5400; symphonyspace.org
SANTA SPREE: Think of the the Polyphonic Spree’s Holiday Extravaganza as a wild and crazy variety show featuring everything from break-dancers and tap-dancing grandmas to bell choirs and zoo demonstrations, plus lots of musicians in Santa Claus hats. An all-ages set starting at 6:30 will showcase the Spree’s “Holidaydream” material; a second, non-holiday set will be played for grown-ups. $20 in advance, $25 at the door. Webster Hall, 125 E. 11th St., between Third and Fourth avenues; 212-353-1600, websterhall.com
SUNDAY:
BY THE NUMBERS: Bet you never thought a museum devoted to math would be this much fun! Check out the Museum of Mathematics’ grand opening weekend and see how exhibits using lasers, 3-D technology, digital puzzles and more turn math into a treat. 10 a.m. to 3 p.m., $14 for kids, $20 for adults. 11 E. 26th St., between Fifth and Madison avenues; 212-542-0566, momath.org
OLD WORLD WONDERS: Some call him Santa Claus, some call him Father Christmas. In Italy the man in red is known as Bobbo Natale, and you can meet him at Centro Raccontami as part of a full-flavored fest featuring panettone and traditional Italian music. 2 p.m., free. 100 W. 14th St. at Sixth Avenue; 212-620-3828, centroraccontami.org