As aventuras do Geodetetive 4: As quatro estações

Synopsis: Arnold is a young very curious and is always looking to learn. At night dives in the books, assumes a new identity, becomes the Geodetetive and collaboration features of his assistant Sagan in his investigations. One night he Elvira helps to understand the reasons for the differences in seasons from one place to another and also the variation of the length of day and night throughout the year in the same locality.
Source: Unicamp - M3, Mathematics Multimedia.
URL: http://m3.ime.unicamp.br/recursos/1105