Every Mon. & Wed. Runners of all abilities invited to join a beginner or advanced 3- to 5-mile group run, followed by socializing at a downtown coffee shop. 6:30 p.m., meet at the Kerrytown Clock Tower. Preregistration requested at meetup.com/a2runners. Free. [email protected].   

Oct. 26–28. Three-day celebration of music for the tuba and euphonium with recitals featuring solo and chamber music performances by students and faculty from the U-M Tuba & Euphonium Studio. 7:30 p.m., U-M Moore Bldg., Britton Recital Hall, 1100 Baits. Free. (734) 764–0583.

Oct. 12 & 26. Bruce Sagan leads an acoustic jam session devoted to traditional music from the Scandinavian countries. All instruments welcome, no experience necessary. 7:30–9:30 p.m., location TBA; email [email protected]. Free.   

Every Mon., except Oct. 5. Performances from up to 15 aspiring stand-up comics from around the state. Local comics emcee. Age 21 & up only. Free candy. 8–9:30 p.m., 208 S. First St. Free. (734) 996–8555.

Every Tues.–Sun., starting Oct. 21. All age 6 & up invited into the museum’s labs to use scientific tools and museum specimens to answer questions and solve problems. The newest program examines how membranes can help solve water shortages. 11 a.m.–3 p.m., 1105 North University. Free. (734) 764–0478, ummnh.org.

Every Tues. (except Oct. 20). Talks by U-M and visiting scholars.

Oct. 6: University of Albany geography professor Tom Narins on “Bad Romance in Southeast Asia: China-Linked Cyber-Scamming, Variegated Govotolerance, and the Geopolitics of Criminality along China’s Belt and Road.”

Oct. 13: City University of New York anthropology professor Anru Lee on “Haunted Modernities: Gender, Memory, and Place-Making in Postindustrial Taiwan.”

Oct. 27: Northeastern University sociology professor Chuncheng Liu on “Metricracy: The Data and Symbolic Politics of a Chinese Social Credit System.”

Noon–1 p.m., 1010 Weiser Hall, 500 Church. Free. (734) 764–6308, [email protected].

Every Tues. All invited to play the classic word game, using the 5th-edition Scrabble dictionary. Bring your own set, if you like. 3:30–8 p.m., Arbor Brewing Company Corner Brewery, 720 Norris, Ypsi. Free. [email protected], meetup.com/ann-arbor-scrabble-meetup.

Every Mon.–Thurs., except Oct. 19 & 20. U-M’s highly disciplined 200+ member marching band or sections thereof can be seen and heard practicing on the new Elbel Field, across the street from the old Elbel Field. All welcome to find a spot in the bleachers and get a sneak preview of upcoming halftime shows. Rehearsals usually last 1–2 hours. Also, at 6 p.m. on Friday, Oct. 16, the band hosts its monthly free Open Stadium Rehearsal at Michigan Stadium. 4:45 p.m., Hill at Fifth Ave. Free. (734) 764–0582.

Every Tues. All invited to play board games, assemble a puzzle, paint miniatures, or try a tabletop role-playing game, all in a friendly, welcoming atmosphere. 5 p.m., 2459 W. Stadium. Free. (734) 929–5877, sylvanfactory.com. 

Every Sun.–Thurs. (different times). All invited to work on their knitting, crochet, weaving, and embroidery projects. 6–8 p.m. (Mon.–Thurs.) & 1–3 p.m. (Sun.), 401 N. Fourth Ave. Free. (734) 780–7867.