El Nombre shows Juan what a circle is (with a cart's wheel, a hoopla ring and a hoop with its stick), while a man named Terry introduces the world-famous "Ring a Ring o' Roses Formation Dance Team" (and their manager, Cynthia) on "Come Prancing", and a prehistoric couple try to invent the round wheel (after the square and triangular ones) for their car for "Great Moments in History"; also, in this episode's second cut-out animated sketch, circular pawprints transform into a circular ladybird, a circular bird, a circular caterpillar (that becomes a circular butterfly), a circular fish which blows circular bubbles, a circular car which emits circular smoke from its circular exhaust, a circular man's head, and a circular bear (and in its CGI animated sketch, a circle gains two additional planes and proceeds to transform into a beach ball, a football, an orange and the planet Earth).