One of the pioneers of video and electronic art, Dan Sandin will present his work in various forms, including single-screen videos and documentation of virtual-reality pieces. His 1979 Wandawega Waters begins as a personal documentary, complete with voice-over, about a lake near the place where he grew up; soon surface ripples and underwater fish become solarized abstractions, though they still look organic. Spiral 5 (PTL) (1980), made with Tom DeFanti and Mimi Shevitz, was originally a live performance, offering intricate abstract patterns that repeat. In A Study of 4D Julia Sets (2005), which Sandin calls “my latest abstract mathematical animation,” smooth and supple surfaces become forests of repeating details. 60 min.