01 / 10Big Think≈ approximate level A21:05–1:07 .
02 / 10Practical Engineering≈ approximate level C11:57–2:06
, .
03 / 10Practical Engineering≈ approximate level C18:56–9:03
, .
04 / 10Practical Engineering≈ approximate level C14:38–4:43
.
05 / 10Practical Engineering≈ approximate level C17:17–7:21
, .
06 / 10Bon Appétit≈ approximate level B23:38–3:46
, .
07 / 10TED-Ed≈ approximate level C11:43–1:54
, , .
08 / 10CrashCourse≈ approximate level A23:16–3:25
, .
09 / 10Practical Engineering≈ approximate level C13:17–3:28
, , , .
10 / 10Practical Engineering≈ approximate level B25:55–6:03
- , , .