Saturday (20th) – Mattapan Moving for Life event, 9 a.m-1 p.m. The Boston Nature Center, 500 Walk Hill St., Mattapan. A 2.0 mile walk though a beautiful nature sanctuary, Fitness Training Sessions; Aerobics; Heart healthy cooking demonstrations; Children’s activities; Raffles; Free T-shirts; and more. Children all ages welcome. To get involved call 617-849-2690 or visit mattapanfoodandfitness.org

• Pope’s Hill Neighborhood Assoc. annual Block Party, 12-6 p.m. on McKone Street. Includes award presentation to outstanding civic and business leaders. Rock wall, pony rides, ice cream truck and more.

Sunday (21st) – A tribute service and luncheon for Rev. Arthur Lavoie, the minister of First Parish Dorchester, who is leaving his position after ten years of remarkable service. Worship service starts at 11 a.m., luncheon to follow catered by Restaurante Cesaria. All are welcome.

Monday (22nd) – David McCullough discusses his new book, Sky High: The Epic Story of the Wright Brothers, 6 p.m. at the JFK Library, Dorchester. Call 617-514-1643 to RSVP.

• BRA hosts a public meeting on the proposed Dot Block development (Pleasant-Greenmount Sts.) from 6:30-8 p.m. at Paul R. McLaughlin Youth Center, 1135 Dorchester Ave. For more info, call Gary Uter, 617-918-4457 or email Gary.Uter@Boston.gov.

• Saint John Paul II Catholic Academy-Lower Mills (formerly Saint Gregory’s) fundraiser at Venezia, 20 Ericsson St., Dorchester, 6-8 p.m. with special guest Jack Connors. This event will assist the newly renovated school in purchasing new furniture. Donations $250 per person requested. Your name or a loved one’s name will be listed on a Donor Wall in the school. RSVP to Mary Myers at Mary_myers@rcab.org or call 781-779-3748.

Wednesday (24th) – Public meeting for all civic groups and neighbors surrounding South Bay Center regarding the proposed expansion project, 7 p.m., Plumbers Union Local 12, 1230 Massachusetts Ave., Dorchester.

Saturday (27th) – Cedar Grove Baseball celebrates Collins Day, its annual field day at Ventura Park with a day-long series of games and a cookout. Ceremony beings at 11:30 a.m.

• Ashmont Hill Chamber Music will present two young Dorchester musicians at their Dorchester Rising Stars benefit, 5 -9 p.m. at The Carriage House home of Nancy Anderson at 31 Ocean St., will feature performances by cellist Tony Rymer and pianist Phuong-Nghi Pham followed by a reception with food and drink. Tickets can be purchased at ahchambermusic.org.

• The Milton Music Festival returns to Hutchinson’s Field on the top of Milton Hill overlooking the beautiful Neponset River on June 27-28. The festival begins on Sat., June 27 at 4 p.m. with live music, artwork, a Touch a Truck event, and face painting.