01 / 9TED-Ed≈ perkiraan levelB23:36–3:45 , , .
02 / 9TED-Ed≈ perkiraan levelB11:33–1:40
.
03 / 9Practical Engineering≈ perkiraan levelB21:02–1:08
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04 / 9TED-Ed≈ perkiraan levelC11:40–1:48
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05 / 9SmarterEveryDay≈ perkiraan levelC11:25–1:32
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06 / 9Practical Engineering≈ perkiraan levelC11:08–1:14
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07 / 9TED-Ed≈ perkiraan levelC13:09–3:19
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08 / 9TED-Ed≈ perkiraan levelC11:58–2:08
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09 / 9Tom Scott≈ perkiraan levelC11:55–1:59
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