Still not sure what to do with Mom and Dad? Don’t worry! Penn has tons of visitor-friendly goings on this weekend. For brainiac parents: Take your 'rents to some special Homecoming classes and show them their tuition dollars are going to good use. Some options include: “Does a Great Poem Do Any Good?” and “The Trojan War — Myth or Fact: Recent Excavations at Troy.” For art aficionados: The Arthur Ross Gallery is exhibiting 20th-century African American painter Jacob Lawrence’s dynamic cubism in "Jacob Lawrence and the Urban Experience: Prints 1963-2000." Or go see "China: Blue Lions and Stone Horses" from the Penn Museum’s Chinese art collection.