Butler Montessori School founder Sister M. Giuseppe will present an informational session on the benefits of a Montessori education at 7 p.m. Friday at Covenant United Presbyterian Church, 230 E. Jefferson St.

Refreshments will be served. The session is open to the community. RSVP by calling 724-283-1846 or emailing butlermontessori@yahoo.com.

GROVE CITY — Student robot builders from a dozen schools including Grove City and Union will descend on Grove City College this weekend for the Grove City College BEST Robotics competition.The action begins at 5 p.m. Friday when teams make marketing presentations detailing their robot's design, construction and mission in the College's IM Room in the Physical Learning Center.Game Day begins at 9 a.m. Saturday in the Arena of the Physical Learning Center. Student teams are challenged to build robots that can help restore the electric grid.

CRANBERRY TWP — The Cranberry Public Library, 2525 Rochester Road, will host “Witches of Pennsylvania” presented by Thomas White at 6 p.m. Oct. 29.Since William Penn presided over the state's only official witch trial in 1684, witchcraft and folk magic have been a part of the history of the Keystone state.Thomas White is the university archivist and curator of special collections at Duquesne University.Seating is limited. Online registration for this event is open now. Register online at www.cranberrylibrary.org or call 724-776-9100 for more information.

GROVE CITY — Experience the wonders of the night sky at Grove City College's Wolverine Skies 2019 from 8 to 10 p.m. Friday.The Department of Physics will have numerous telescopes set up on the campus Quad, between Crawford Hall and Harbison Chapel, for a viewing session led by resident astronomer Dr. James Clem, professor of physics.Physics faculty will be on hand to help the public experience and understand a variety of celestial objects.Wolverine Skies is free and open to the public. For more information, visit the department's Facebook page at www.facebook.com/GCphysi.

BRUIN — Pumpkin Fest will run from 2 to 6 p.m. Saturday in Bruin Community Park.Open to all ages, the event will feature games, food and a bounce house. The event is sponsored by the United Methodist Churches of the Petroleum Valley.