01 / 17Practical Engineering≈ approximate level B22:44–2:50 , , .
02 / 17TED-Ed≈ approximate level B12:32–2:37
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03 / 17TED≈ approximate level A22:38–2:43
, , .
04 / 17CrashCourse≈ approximate level C16:16–6:23
, , .
05 / 17TED-Ed≈ approximate level C11:30–1:37
, , .
06 / 17BBC Learning English≈ approximate level B15:32–5:39
, , .
07 / 17Practical Engineering≈ approximate level B211:15–11:20
, , .
08 / 17CrashCourse≈ approximate level B25:12–5:18
, , .
09 / 17TED≈ approximate level C12:47–2:58
, .
10 / 17TED-Ed≈ approximate level B23:09–3:17
, , .
11 / 17CrashCourse≈ approximate level C12:30–2:42
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12 / 17BBC Learning English≈ approximate level B14:27–4:33
, , .
13 / 17PBS NewsHour≈ approximate level C13:44–3:51
, , , .
14 / 17Practical Engineering≈ approximate level C110:29–10:37
, , , , .
15 / 17Sprouts≈ approximate level B22:36–2:46
, , , .
16 / 17Practical Engineering≈ approximate level C15:17–5:27
, , .
17 / 17TED≈ approximate level C14:16–4:26
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