01 / 8Sprouts≈ approximate level C14:57–5:09 ‘ ’, ' , '' , - 's .
02 / 8Sprouts≈ approximate level B23:17–3:25
, .
03 / 8Practical Engineering≈ approximate level B28:40–8:47
, .
04 / 8Practical Engineering≈ approximate level C19:14–9:22
, .
05 / 8TED-Ed≈ approximate level C13:05–3:21
, , “ ” , .
06 / 8Practical Engineering≈ approximate level C13:30–3:41
, .
07 / 8The New Yorker≈ approximate level C11:06–1:22
, , -, .
08 / 8Practical Engineering≈ approximate level C18:00–8:12
, , , , .