Beating the Boys
Which gender is superior, boys or girls? In Melmo's class, the boys and girls confront each other over this issue. Melmo asks for advice from her senior girl friend Naname, who is the leader of the girls. Naname insists that girls are undoubtedly superior to boys. Asked for advice from the boys, Shikaku, who is the leader of the boys, proudly proclaims that boys are unquestionably superior to girls. These assertions intensify the confrontation between them.. In the end, they come up with the idea to "decide which is superior by a match." Source: tezukaosamu.net
Aired 17/10/1971EP 3 - Beating the Boys

Fushigi na Melmo
After nine-year-old Melmo loses her mother in a car accident, she is left to care for her two younger brothers, a task far beyond her age or means. However, in the midst of her grieving, Melmo is visited by the ghost of her deceased mother who gives her a bottle of miraculous candy, capable of transforming her into either an adult (blue candy) or an infant (red candy). A combination of the two can reduce her to a fetus and then change her into any animal she imagines. Drawing on a seemingly inexhaustable supply, Melmo uses her candies to solve the various problems thrown her way, aided by her younger brother Toto (who accidentally morphs into a frog in episode 7) and her cantankerous mentor, Dr Nosehairs.
(Source: Anime News Network)