Original: Searching for a new Earthbending teacher, the group meets Toph, a blind Earthbending prodigy who teaches Aang how to "see" using Earthbending and vibrations.
Simplified: Searching for a new Earthbending teacher, the group meets Toph Bei Fong, a blind Earthbending prodigy who teaches Aang how to "see" using earthbending and vibrations.