Every Mon. Slow/moderate-paced 23-mile ride to Independence Lake on mostly dirt roads. See aabts.org for weather cancellations or delays. 9 a.m. sharp, meet at Old St. Patrick Catholic Church, 5671 Whitmore Lake Rd. Free. (412) 302–9960. 

Every Mon., except Sept. 7. All invited to join this independent local women’s chorus to sing an eclectic program, including classical, folk, Broadway, pop, and jazz. Joshua Marzan directs. 9:30–11:30 a.m., First Presbyterian Church, rear ground level, 1432 Washtenaw Ave. Free to visitors ($175 per semester for those who join; partial scholarships available). [email protected].

Every Mon.–Thurs. (except Sept. 7). The 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. 4:45 p.m., new Elbel Field, Hill at Fifth Ave. Free. (734) 764–0582.

Every Thurs., Sat., & Mon. (different AARC locations). Runners of all abilities invited to join a 5K mapped route (Thurs. & Mon.) or either a beginner or advanced group run (Sat.). AARC Colonnade (6 p.m. Thurs.), 2621 Plymouth Rd.; AARC Traver Village (7 a.m. Sat.), 901 W. Eisenhower; and Corner Brewery (6 p.m. Mon.), 720 Norris, Ypsi. Free. annarborrunningcompany.com. 

Every Mon. Moderate-paced 20-mile ride to Dexter and back, often with a rest stop along the way. Riders must wear a helmet and bring water and supplies to fix a flat tire. 6 p.m. (nonmembers must come 10 minutes early to sign a club waiver), Barton Nature Area, 1010 W. Huron River Dr. Free. annarborveloclub.org.  

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.

Every Wed. & Mon. 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].  

Sept. 14 & 28. Bruce Sagan leads an acoustic jam session devoted to traditional music from Sweden and Norway. All instruments welcome, no experience necessary. 7:30–9:30 p.m., location TBA; email [email protected]. Free. 

Every Mon. 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 Sun., Tues., & Wed. Runners of all abilities invited to join a run of 3–5 miles along varying routes from different locations. Rain or shine. Dozer Coffee (7 a.m. Tues. & 8 a.m. Sun.), 112 Jackson Plz., (734) 929–9022 & Fleet Feet (7 p.m. Wed.), 123 E. Liberty, (734) 769–5016. Free. fleetfeetsemichigan.com.

Every Tues.–Sun. All age 6 & up invited into the museum’s labs to use scientific tools and museum specimens. The newest program lets participants try out simulated snake senses (sight, hearing, and smell) to experience the world as if they were a snake. No live snakes. 11 a.m.–3 p.m., 1105 North University. Free. (734) 764–0478, ummnh.org.

See 27 Sunday. Today: “Water Management Lightning Panel” (1–2 p.m., Weiser Hall, 1010), presentations by U-M researchers TBA, followed by Q&A. Also “50 States of Sustainability” (5:30 p.m., Palmer Commons, 100 Washtenaw Ave.), a screening of an episode of a PBS series highlighting communities developing solutions to environmental challenges, followed by a panel discussion by U-M faculty and sustainability practitioners. 1 p.m. & 5:30 p.m.

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.

Oct. 1 & 29. Talks by visiting scholars.

Oct. 1: Howard University history professor Ademide Adelusi-Adeluyi on “Imagine Lagos: Rethinking the Histories of West African Cities in the 19th Century.”

Oct. 29: Vanderbilt University history professor Samuel Dolbee discusses the history of Turkish fruit orchards in “Ottoman Roots.”

4–6 p.m., 1014 Tisch Hall, 435 S. State. Free. (734) 615–7400.

Every Mon.–Thurs. (except Sept. 7). The 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. 4:45 p.m., new Elbel Field, Hill at Fifth Ave. Free. (734) 764–0582.

Every Tues. Moderate-paced ride, 20 to 30 miles, along the less-traveled roads west and north of Chelsea. See aabts.org for weather cancellations or delays. 5 p.m. sharp, meet at Aberdeen Bike and Outdoors, 1101 Main, Chelsea. Start location occasionally changes. Free. (734) 662–0205.

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. Also, at 6 p.m., RPG One Shots, introductory games of different tabletop role-playing games perfect for beginners, finished after one session (see website for this week’s game, preregistration strongly encouraged at sylvanfactory.square.site). 5 p.m., 2459 W. Stadium. Free. (734) 929–5877, sylvanfactory.com.

See 27 Sunday. Today: “Water Management Lightning Panel” (1–2 p.m., Weiser Hall, 1010), presentations by U-M researchers TBA, followed by Q&A. Also “50 States of Sustainability” (5:30 p.m., Palmer Commons, 100 Washtenaw Ave.), a screening of an episode of a PBS series highlighting communities developing solutions to environmental challenges, followed by a panel discussion by U-M faculty and sustainability practitioners. 1 p.m. & 5:30 p.m.

Sept. 21 & 29 (different branch locations). Adults and teens invited to learn the basics of needle felting with wool, then make a small sheep (Sept. 21) or ghost (Sept. 29). 6–7 p.m., AADL Pittsfield (Sept. 21) & AADL Downtown (Sept. 29). Free. (734) 327–8301.

Every Tues. & Thurs. All invited to play a low-contact version of rugby. Beginners welcome. 6–7:30 p.m., Riverside Park, 1000 Canal St. Free. [email protected].  

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.

Every Tues. Singers of all ages and genders invited to join rehearsals of this award-winning a cappella chorus. 7–8:45 p.m., First Unitarian Universalist Church, 4001 Ann Arbor–Saline Rd. Free to visitors; call ahead or check website (dues for those who join). (734) 796–7467, [email protected], hvharmonizers.org.

Every Tues. Women singers invited to join a rehearsal of this local 40-member a cappella barbershop harmony chorus. 7–9:30 p.m., UAW Local 898, 8975 Textile, Ypsi. Free to visitors (dues for those who join). (734) 765–3611, [email protected], voicesinharmonychorus.org.