06:15Sesame TreeSeries 1Episode 12: Practice Makes PerfectBBC Two Duration: 15 minutes Sat 28th Jun 2008, 06:15 on BBC Two Northern Ireland (Analogue)Hilda asks Potto to play swingball, but he won't even try as he's not very good at the game. The question that comes in, "Why is it good to do hard things?".GenresChildren'sEntertainment & ComedyLearningPre-SchoolBrandSesame TreeSeriesSesame Tree: Series 1 Source: BBC Online