01 / 15Sprouts≈ approximate level C14:55–5:03 , , .
02 / 15Practical Engineering≈ approximate level C19:23–9:29
.
03 / 15TED≈ approximate level B27:28–7:34
?
04 / 15Tom Scott≈ approximate level B10:09–0:12
?
05 / 15Practical Engineering≈ approximate level C110:21–10:28
.
06 / 15Practical Engineering≈ approximate level C18:38–8:45
, .
07 / 15Big Think≈ approximate level B13:01–3:11
, , , .
08 / 15Practical Engineering≈ approximate level B25:38–5:44
“” .
09 / 15Practical Engineering≈ approximate level B24:05–4:11
, .
10 / 15Practical Engineering≈ approximate level B26:27–6:33
, .
11 / 15Practical Engineering≈ approximate level B24:13–4:16
.
12 / 15Practical Engineering≈ approximate level C16:59–7:07
.
13 / 15Practical Engineering≈ approximate level C15:36–5:46
, , .
14 / 15SciShow≈ approximate level B24:03–4:13
, .
15 / 15Practical Engineering≈ approximate level C16:06–6:17
-, .