is a 15-minute Japanese educational television program that has been aired by NHK since April 9, 2002. It encourages augmenting children's "way of thinking" under the supervision of and . A five-minute format called PythagoraSwitch Mini is also available. During the beginning and ending of each episode, and between each corner (segment), there are . "Pythagorean device" is the equivalent Japanese colloquialism for the American "Rube Goldberg machine" and British "Heath Robinson" contraption. The main focus of the program is a puppet show, but the subject is mainly advanced by small corners. World phenomena, principles, characteristics, and the like are introduced in an entertaining way. At the end of each segment, the show's title is sung as a kind of punchline. Segments In the show, segments are called "corners". Today's Topic A puppet show in which explains the structure of the world to young penguins Pita and Gora. A recurring situation is that, while discussing each topic, Encyclopedia would often say "The details are on my Nth page", to what the Penguins, after looking at said page, respond "We're children, so we can't read..." After that, the three call upon an anthropomorphic dog-like TV, who shows them a video about the topic. A mouse called Suu is also featured. Pythagora Devices are frequently featured. Algorithm Exercise A corner broadcast since 2002. It stars the duo Itsumo Kokokara. It is algorithm themed, so that the movements that are done side by side are related ("crouching motion" combines with "shaking arms", so that the arms avoid the action, etc.). Usually, the duo does the exercise with special guests, such as NHK announcers, baseball players, sumo wrestlers, etc. There are also individual versions for each member: the "Yamada version" and the "Kikuchi version". Algorithm March Otou-san Switch A segment in which a father and his child act out sequences and play games based on any of the Japanese letter sounds. Other Corners Sumo wrestler Tea kettle Chicks : A potato shaped like a dice (voiced by Iwao Nozomi) moves forward and backward and to the left and right in the tiles drawn on the ground, with words written on each side of him. He can move even if he is out of the tiles. : This segment introduces the stages of product testing before the shipment of industrial products. Office chairs Ballpoint pens : Animated shorts about a dog named Framy, who is