After receiving permission to do so, Eino opened his goodie bag and pulled out a notebook, a pen, and the other materials Professor Cerulean had supplied them with. Well, he had used these when he went to Muggle school so it wasn't too hard to remember how to use them, which was good. He quickly put his parchment, quill, bottle of ink, and wand away in his backpack. Then he turned his attention to Professor Cerulean again. "Communication." He said with his hand high in the air. "Wizards tend to use letters, howlers, floo network, even patronus charms, and other methods of communication. Muggles do use letters, too, but they are mostly those electronic things, and they also use telephones, all different kinds of telephones." Eino really didn't know much about their communication methods since he had never used a telephone, but he saw them quite often.