EAST LIBERTY: The Health Ministry at East Liberty Presbyterian Church, 116 S. Highland Ave., is accepting registrations for weekly tai chi classes to start Sept. 9. Session A is from 6 to 7 p.m. Tuesdays, and Session B is from 10 to 11 a.m. Thursdays. Judy Crow is instructor. A $3 donation per class is requested. For more information, call the Rev. Patrice Fowler-Searcy at 412-441-3800, ext. 30.

OAKLAND: Pittsburgh Parks Conservancy sponsors A Walk in the Woods at 6:30 p.m. at Schenley Park, starting at the park's Visitor Center. Part of the hike may be on uneven terrain with moderate difficulty. Join knowledgeable park docents and learn about park history, activities and ecology. For more information, call 412-682-7275.

BELTZHOOVER: Greater Beltz-hoover Inter-agency Network presents its ninth annual "Meet the Principals" family event from 6 to 7:15 p.m. at Upper McKinley Park Recreation Center, 900 Delmont Ave. Guests include Pittsburgh Public Schools Deputy Superintendent Linda Lane, District 8 school board member Mark Brentley, plus various school principals and politicians. There are fun activities for youths, plus updates and announcements from several community organizations. A reception is at 5 p.m.; dinner follows the meeting.

HILL DISTRICT: State Rep. Jake Wheatley sponsors his sixth annual Community Appreciation Day from 11 a.m. to 4 p.m. at Kennard Field, Reed and Kirkpatrick streets. The event includes free food and entertainment and a college fair, with a free People's Concert to follow from 5 to 8 p.m. For more information, visit www.pahouse.com/Wheatley or call 412-471-7760.

HOMEWOOD: Life Mastery Ministries, in collaboration with the Ephesus Project and the Rev. Sharon Dennard, present A Call to Battle, an event which aims to pull the community together through prayer. It is from 9 to 11 a.m. at the YMCA of Pittsburgh's Homewood-Brushton branch, 7140 Bennett St. Clergy interested in participating are to call 412-542-1700.

NORTH SIDE: Pollard Inc. and the Pittsburgh Department of Parks and Recreation present the play "Two for One: An Urban Drama," from 3 to 5 p.m. at West Park/Allegheny Commons Park, near the National Aviary. The free performance, which includes dance and music, tells the story of two brothers caught in the urban struggle faced by young African-American men across the nation. An audience talk-back session follows at 5 p.m. For more, visit www.city.pittsburgh.pa.us/parks or call 412-853-3219.

OAKLAND: Today is the last day of the exhibit "Lincoln's Pittsburgh Address" at Soldiers & Sailors Memorial Hall and Museum, 4141 Fifth Ave. It features furnishings from the Monongahela House where President-elect Lincoln stayed on Feb. 14, 1861, en route to his inauguration. Hours are 10 a.m. to 4 p.m.; closed Labor Day.

SOUTH SIDE: Greek Catholic Union Lodge 28 presents its Fall Festival from 9 a.m. to 2 p.m. today and tomorrow at St. John the Baptist Byzantine Catholic Church, 1720 Jane St. It features food, a bake sale, a raffle and flea market. Proceeds are to benefit St. John's Parish and Brashear Food Pantry.

CARRICK: Stewart Avenue Evangelical Church, 2810 Brownsville Road, holds a Rally Day from 9:30 to 10:30 a.m., with activities, games, Bible studies, doughnuts, coffee and juice. A church picnic follows from noon to 3 p.m., with food, games and family activities.

EAST LIBERTY: East Liberty Presbyterian Church, 116 S. Highland Ave., begins a new, weekly worship service called Journey: A Gospel Service of Spirit, Hope & Praise at 8:45 a.m. Sundays. The service aims to build upon the strengths of the church, and includes a blend of classical and contemporary, gospel songs and hymns, introspective worship and interactive communal praise. Fellowship and coffee are at 8:30 a.m. in the third-floor music room. For more information, call Gloria Knopp at 412-441-3800, ext. 22.