"Uma Swing!" is an episode of Oobi from the first season.
Oobi helps Uma get used to the playground and teaches her how to swing on the swings. Uma falls when she gets on too fast and is afraid to try again, but Oobi helps her to be more careful and soon Uma is swinging all by herself. — Nickelodeon (source)
Oobi and Uma are at the playground. Oobi asks Uma if she wants to play on the seesaw, but Uma would rather spend the day on the swings. Before she swings, Oobi demonstrates how to swing carefully. Uma grows impatient and ignores what Oobi says. She attempts to swing as fast as she can, causing her to fall off. She begins to cry as Grampu rushes over and comforts her. Uma feels better, but has developed a fear of the swing set.
Oobi asks Uma if she wants to try again and she declines. Oobi tries to calm her down by playing on the slide, making sure that she does not injure herself again. They slide down together at first. They take turns sliding later on. On his turn, however, Oobi decides to twirl around and falls off prematurely. This serves as a reminder to him that it is very important to be careful at the playground. Oobi asks Uma if she has the courage to try swinging again. She tells him that she will try, this time listening to Oobi's advice.
Uma swings carefully and is astonished to be swinging by herself. She calls Kako and Grampu to watch. After they swing, Oobi plays a counting game with the other characters. Uma wants to play another game and suggests giving each other piggyback rides. The four puppets piggyback on top of each other and fall down shortly afterwards, laughing. The episode ends.