Episode 4: Exciting! Summer Camp!
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Summer Camp! The students are going to the Geological Museum, JAXA, and more. Sakura gets unusually excited looked at different minerals and fossils while Ino gets excited watching her. On the other hand, Monroe, Mira, and Ao get excited over rockets and artificial satellites. Mira and Ao try asking different people for information on discovering asteroids, but they aren't able to gather any clues. Though after enjoying a barbeque and some stargazing at the home of Endou-sensei's grandparents, their teacher digs up something...
It's probably the skeletal structure of a sea 
creature from the end of the Precambrian Era.
على الأرجح أنه الهيكل العظميّ لمخلوق بحريّ 
.من نهاية العصر ما قبل الكامبري
Vermutlich handelt es sich um die Skelett-Struktur
eines Meereslebewesens aus dem späten Präkambrium.
Tejido óseo de seres marinos
que vivían a finales del Precámbrico.
Tejido óseo de seres marinos
que vivían a finales del Precámbrico.
C’est le tissu osseux d’un animal marin
de la fin du Précambrien.
Sono le componenti della struttura scheletrica 
di una creatura marina del Precambriano.
É provavelmente a estrutura esquelética de uma
criatura marinha do fim da era pré-cambriana.
Возможно, отпечаток скелета 
морского существа докембрийского периода.