01 / 12TED-Ed≈ approximate level C11:31–1:37 ’s .
02 / 12Sprouts≈ approximate level A21:34–1:42
!
03 / 12TED-Ed≈ approximate level C13:51–3:59
, - .
04 / 12TED-Ed≈ approximate level B25:08–5:15
, , .
05 / 12TED≈ approximate level B26:01–6:08
, , .
06 / 12TED-Ed≈ approximate level C12:05–2:12
— .
07 / 12TED-Ed≈ approximate level B20:06–0:15
, .
08 / 12CrashCourse≈ approximate level B28:12–8:18
, , .
09 / 12NBC News≈ approximate level C10:02–0:13
.
10 / 12TED≈ approximate level C18:39–8:50
, , , .
11 / 12CrashCourse≈ approximate level B16:32–6:39
.
12 / 12CrashCourse≈ approximate level B23:39–3:51
: ’s , , – – .