Renu Mathew has survived a third week on CBC’s The Great Pottery Throw DownJudges Brendan Tang and Natalie Waddell, along with host Jennifer Robertson talk to Renu Mathew about her abstract self-sculpture. 1 / 1 Judges Brendan Tang and Natalie Waddell, along with host Jennifer Robertson talk to Renu Mathew about her abstract self-sculpture. AdvertisementÉcole Olds High School art teacher Renu Mathew has survived a third week on CBC’s The Great Pottery Throw Down. Mathew survived that challenge. “The nuance, the movement, with the shape and the colours as well as the enhancement of that texture’s really, really wonderful,” Waddell said.