01 / 10Practical Engineering≈ approximate level C18:16–8:24 ’s .
02 / 10CrashCourse≈ approximate level B110:36–10:44
’s .
03 / 10Tom Scott≈ approximate level A23:52–3:57
, .
04 / 10Tom Scott≈ approximate level C14:21–4:28
, .
05 / 10Big Think≈ approximate level B110:57–11:03
.
06 / 10MKBHD≈ approximate level B24:46–4:51
, , .
07 / 10Practical Engineering≈ approximate level C14:52–5:01
, .
08 / 10Tom Scott≈ approximate level C12:16–2:24
’s , , , .
09 / 10Tom Scott≈ approximate level C13:54–4:02
.
10 / 10TED-Ed≈ approximate level C14:36–4:48
, , , .