Class 7 has its first joint lesson with another class. Washinomiya-sensei, the other class' homeroom teacher teaching the cooking lesson, accuses Hibari and her friends of lacking awareness. Refusing to allow her comment to discourage them, the girls continue with the class, but...
They're prescription goggles.
هذا ناظور موصوف طبّياً
Das ist eine Unterwasser-Brille
auf Rezept.
Lentes graduados para nadar.
Gafas graduadas para nadar.
Des lunettes de plongée
à ma vue.
Occhialini prescritti 
appositamente per andare sott'acqua.
São óculos de grau para a água.