However, once the activity is fully-obstructed and not visible, it stops (which is discussed in the next lesson).

然而，一旦活动完全阻塞和不可见，它就会停止(这是下节课所讨论的)。

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As the teacher, should pay attention to the exploration of lesson teaching of Chinese activity and practise.

作为教师，应重视语文活动课教学的探索和实践。

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"Saying lesson" is a kind of teaching research activity, which started in the late 20th century.

“说课”是20世纪末期兴起的教研活动形式。

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Significantly not a single education lesson or evening activity has been cancelled over the past year in either prison.

ECONOMIST: Prisons

For children with STEM mentors in their families and neighborhoods, even a basic childhood activity like flying a kite becomes a lesson in aerodynamics, and a window into the wonders of the universe and future careers.

FORBES: We Need All Hands on Deck for Science Education