Every Fri. Moderate-paced ride, 20 miles or more, to Dexter and beyond. Pack a lunch or stop in Dexter. See aabts.org for weather cancelations or delays. 9 a.m. sharp, meet at Delhi Metro Park parking lot (left of the tollbooth), E. Delhi off Huron River Dr. Free. [email protected].   

Every Fri. Slow/moderate-paced 18-mile gravel road ride with a rest stop at St. John’s Evangelical Lutheran Church. See aabts.org for weather cancelations or delays. 9 a.m. sharp, meet at Olson Park, 1515 Dhu Varren. Free. (412) 302–9960.   

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].

Local writer Lisa Keefauver reads from and discusses her book, Grief is a Sneaky Bitch: An Uncensored Guide to Navigating Loss, on the 2-year anniversary of its release. The on-stage discussion is a dialog between Keefauver and local therapist Lindsay Bryan-Podvin. An audience Q&A and book signing follow. 1:30 p.m. JFS Ann Arbor Board Room, 2245 S. State St. Registration required here.

Skaters of all ages show off their ice dancing routines. 2:15–4:05 p.m., Ann Arbor Ice Cube, 2121 Oak Valley Dr. at Scio Church Rd. Free admission. (734) 213–6768, [email protected], annarborfsc.org. 

Every Thurs.–Sun., June 4–Sept. 28. Local musicians TBA perform at several locations along Main downtown. Rain cancels. 4 p.m. Thurs.–Sun., S. Main between E. Washington & W. William. For the complete lineup, go to mainstreetannarbor.org/a2-summer-streets. Free.

Teens and young adults invited to learn how to navigate with a map and compass. Materials provided. Dress for the weather. Minors must be accompanied by an adult. Inclement weather cancels. 5–6:30 p.m., West Park. Free, preregistration required at tinyurl.com/a2parksrec or (734) 794–6250. [email protected].

Endurance athlete Dion Leonard discusses his new book about how he befriended a small stray dog during a 155-mile race across the Gobi Desert. Signing. 6–7:30 p.m., AADL Downtown, 4th fl. Free. (734) 327–4200.

Every Fri., July 31–Aug. 28. Formerly the Ypsilanti Frog Island Jazz Concert series, now in a larger venue at Ford Lake Park, with outdoor performances by national and area smooth jazz acts. Veteran local jazz guitarist Lawrence opens each night by playing a piece with the featured artist. Bring a lawn chair or blanket to sit on. Tonight: the acclaimed Philadelphia R&B jazz fusion group Pieces of a Dream. 7 p.m., Ford Lake Park, 9075 S. Huron River Dr., Ypsi. Free (parking, $10 per vehicle). (734) 635–5446, [email protected].

Every Fri., except Aug. 14. All invited to drop in to use the observatory’s 1857 Fitz telescope and other modern instruments. Exhibits are also open regardless of viewing conditions. Last visitors admitted 30 minutes prior to closing. 9–11 p.m., 1398 E. Ann at Observatory. Free, no registration required. (734) 763–2230, detroitobservatory.umich.edu.