Love and Other Entanglements from 7 to 9 p.m. Friday (doors at 6:30) at The MIT Museum, 265 Massachusetts Ave., in the The Port neighborhood. Tickets are $10 online, or $15 at the door.

Prepare for Valentine’s Day with an evening of humor, science and fun. Enjoy the first public read-through of the one-act play “Both/And” by Patrick Gabridge, about quantum entanglement and humanity’s struggle to understand the building blocks of the world; savor live musical performances of jazz standards by Frank Sinatra, Nat King Cole and Ella Fitzgerald and others by vocalist Eiji Miura and pianist Dan Barton; and hear tales by storytellers David Kaiser (“Spooky: How I Learned to Stop Worrying and Love Quantum Entanglement”), Lindsay Brownell (“Thee Guys, Two Love Triangles, One Frisbee”), Katie Liesner and Brendyn Schneider (“The Ride”). Light refreshments will be available. Information is here.

Family and Children’s Concert Series: Tufts Symphony Orchestra from 1 to 2 p.m. Saturday at Granoff Music Center at Tufts University, 20 Talbot Ave., Medford. Free.

The Tufts Symphony Orchestra, directed by John Page, performs a children’s concert featuring John Williams’ “Star Wars Suite” and Mahler’s “Symphony No. 1.” Information is here.

“Tiny & Short: A Drop in the Bucket” at 8 p.m. Saturday and Sunday at The Dance Complex, 536 Massachusetts Ave., Central Square. Tickets are $25 (or $26.87 with the service fee), though there are $16 early bird tickets available ($17.55 with the online service fee).

The Dance Complex has challenged 33 performers to do either “tiny dances,” taking place within a four-foot-square space, or “short dances,” limited to 10 minutes or less. Each audience member gets a ticket to vote with at the end of the show, with a portion of the ticket revenue going to the artist they vote for. Information is here.

Laughing Liberally from 8 to 9:30 p.m. Saturday at The Center for Arts at the Armory, 191 Highland Ave., Somerville. Tickets are $8 online or $10 at the door.

An array of comedians and storytellers push their liberal agenda, with the night’s bill including Katie Qué, Reece Cotton, Ryan Chani, Terence Pennington Jr. and headliner Tawanda Gona. “Can we laugh while we resist forces of racism, sexism, bigotry?” organizers ask. “Yes – we absolutely can, and this is straight-up fact. Nothing alt about it.” Information is here.

Valentines shopping on Sunday in Somerville and Cambridge.

The Somerville Local First Valentine’s Day Market runs from 11 a.m. to 4 p.m. Sunday at The Center for Arts at the Armory, 191 Highland Ave., Somerville, with free entry, and features more than 40 local vendors in a Somerville Local First Makers Marketplace with handcrafted goods, jewelry, accessories, confections, home decor, textiles, art, apparel and gifts.

The Black Market runs from 11 a.m. to 5 p.m. Sunday at the Massasoit Elks Lodge, 55 Bishop Allen Drive, Central Square, for $1 entry, a flea market with handmade artwork, prints, patches, records, tees, pins, ceramics, jewelry, zines, body care, tea, macrame; vintage clothing, accessories, books, as well as tarot readings, haircuts, live drawings, and more, presented by The Boston Hassle and Ignore Rock*n*Roll Heroes. “The only good mall is a dead mall,” organizers say.