The mediocre teacher tells.
The good teacher explains.
The superior teacher demonstrates.
The great teacher inspires.
― William Arthur Ward
These are the basics. The alphabet of whatever discipline you are studying. These are the fundamentals which are typically memorized; they are the givens, the axioms. In the earliest stages of education, the mind absorbs these fundamentals to provide a framework/foundation for development.
Alphabet → Words → Phrases → Sentences
Vocabulary → Spelling → Pronunciation → Sentences