Every Tues., except Aug. 18. 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.

Talk by Mike Sautter, a veteran beekeeper who manages over 100 colonies and specializes in hive inspections and troubleshooting. Preceded at 6:30 p.m. by a beginners’ Q&A session. 7–9 p.m., U-M Matthaei Botanical Gardens, 1800 N. Dixboro Rd. Also available online at home. Free; metered parking. a2b2club.org.

Aug. 11 & 25. All invited to join an evening of this early American form of hymn singing that uses musical notation with distinct shapes to make learning easier. Songbooks available, but singers encouraged to bring their own. No experience required. 7–9 p.m., Riverside Arts Center, Off Center Bldg., 76 N. Huron St., Ypsi. Free. (734) 480–2787, riversidearts.org/shape-note-singing-ypsilanti.

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.

Market vendors demonstrate how to prepare various foods safely. With recipes and samples. 11 a.m.–noon, Farmers Market Pavilion, Kerrytown. Free. a2gov.org/market. 

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 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.

Every Sat., Fri., & Wed. All invited to play one of 200 songs, with melodies transcribed in numbers, on the 17-bell chime’s numbered keys. Ambitious players can add chords. Kids welcome. 10:30–11 a.m. (Sat.) & noon–12:30 p.m. (Wed. & Fri.). Free. [email protected].

Aug. 12 & 26. All invited to participate in a relaxed evening of board games. If you want, bring a game to share. 4–7 p.m., 1200 Packard. Free; food & drink for sale. (734) 997–5448, argusfarmstop.com.

Every Wed. Slow/moderate-paced ride, 10 to 30 miles, along the B2B Trail to Hudson Mills Metropark and/or Dexter-Huron Metropark with a possible visit to the Dexter Dairy Queen. This ride is a favorite with newcomers and casual riders. See aabts.org for weather cancelations or delays. 5 p.m. sharp, meet at Forest Lawn Cemetery parking lot, corner of Broad & Grand, Dexter. Free. (734) 426–5116.

Every Tues. All invited to play one of a selection of 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.

Adults & teens invited to use vibrantly colored powdered pastel pigments to make portraits of the waterfowl that visit the pond outside the AADL Pittsfield branch. 5–7 p.m., AADL Pittsfield. Free. (734) 327–4200.