01 / 9SmarterEveryDay≈ perkiraan levelA21:16–1:19 .
02 / 9TED≈ perkiraan levelC11:39–1:44
, , , .
03 / 9SmarterEveryDay≈ perkiraan levelB25:21–5:26
, .
04 / 9Steve Harvey≈ perkiraan levelC12:22–2:28
, .
05 / 9Steve Harvey≈ perkiraan levelC12:10–2:16
, ?
06 / 9Dropout≈ perkiraan levelB19:44–9:46
.
07 / 9Dropout≈ perkiraan levelC19:23–9:29
, .
08 / 9SmarterEveryDay≈ perkiraan levelC14:17–4:20
.
09 / 9CrashCourse≈ perkiraan levelC17:18–7:35
— — , , , .