01 / 9SmarterEveryDay≈ approximate level A21:16–1:19 .
02 / 9TED≈ approximate level C11:39–1:44
, , , .
03 / 9SmarterEveryDay≈ approximate level B25:21–5:26
, .
04 / 9Steve Harvey≈ approximate level C12:22–2:28
, .
05 / 9Steve Harvey≈ approximate level C12:10–2:16
, ?
06 / 9Dropout≈ approximate level B19:44–9:46
.
07 / 9Dropout≈ approximate level C19:23–9:29
, .
08 / 9SmarterEveryDay≈ approximate level C14:17–4:20
.
09 / 9CrashCourse≈ approximate level C17:18–7:35
— — , , , .