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06:24

Science & Technology

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04:01

Thinking & Learning

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05:20

Science & Technology

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05:30

Thinking & Learning

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05:48

Science & Technology

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05:26

Science & Technology

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Lesson duration 05:26

252,637 Views

06:01

Philosophy & Religion

Ethical dilemma: Should knowledge be free?

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229,309 Views

06:33

Health

The ancient medical practice that persisted for too long

Lesson duration 06:33

185,231 Views

05:44

Social Studies

The dark history of Graham crackers

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06:21

Social Studies

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06:27

Health

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05:31

Social Studies

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05:20

Psychology

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05:41

Design, Engineering & Technology

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04:49

Philosophy & Religion

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161,945 Views

06:05

Science & Technology

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Lesson duration 06:05

578,760 Views

05:31

Design, Engineering & Technology

How much does it cost to fly private?

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05:50

Psychology

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Lesson duration 05:50

324,355 Views

05:49

Science & Technology

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214,220 Views

07:17

Social Studies

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Lesson duration 07:17

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05:46

Social Studies

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437,752 Views

05:38

Thinking & Learning

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Lesson duration 05:38

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05:02

Science & Technology

How did detectives solve the case of the bloody fingerprints?

Lesson duration 05:02

221,611 Views