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Lesson
Texto da Wikipédia (en), licença CC BY-SA. O BETARUBI mostra o verbete inteiro nesta página — a leitura não continua fora do site.
A lesson or class is a structured period of time where learning is intended to occur. It involves one or more students being taught by a teacher or instructor. Generally, a lesson is defined as "a piece of instruction; a reading or exercise to be studied by a pupil; or a division of a course of instruction."