How Do Things Work?
Beginner - Intermediate
15 Videos
Collection of questions and answers explaining how stuff works, for the curious mind.
World
How Do Things Work?
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Adv-Intermediate
China
Time is an intangible thing that is difficult to measure. This little video talks about the different tools used to measure time in history.
Adv-Intermediate
China
Time is an intangible thing that is difficult to measure. This little video talks about the different tools used to measure time in history.
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