01 / 23Practical Engineering≈ approximate level C18:44–8:52 , .
02 / 23Practical Engineering≈ approximate level B17:20–7:24
.
03 / 23SmarterEveryDay≈ approximate level C16:12–6:19
, - , .
04 / 23Sprouts≈ approximate level B20:18–0:23
.
05 / 23Practical Engineering≈ approximate level B27:30–7:34
.
06 / 23SciShow≈ approximate level C16:51–6:53
.
07 / 23Practical Engineering≈ approximate level B25:31–5:38
, .
08 / 23Practical Engineering≈ approximate level B27:14–7:19
.
09 / 23MKBHD≈ approximate level C17:46–7:49
, .
10 / 23TED-Ed≈ approximate level B24:22–4:29
, .
11 / 23Practical Engineering≈ approximate level B13:20–3:28
, , .
12 / 23BBC Ideas≈ approximate level C11:44–1:51
, , .
13 / 23Practical Engineering≈ approximate level B28:51–9:00
, .
14 / 23Practical Engineering≈ approximate level B26:54–7:02
, , .
15 / 23CNBC Make It≈ approximate level B11:01–1:05
, .
16 / 23Sprouts≈ approximate level B10:17–0:25
, , .
17 / 23TED≈ approximate level B22:09–2:11
.
18 / 23Practical Engineering≈ approximate level C13:40–3:52
, .
19 / 23Kurzgesagt≈ approximate level C15:28–5:37
, -- ' .
20 / 23TED-Ed≈ approximate level B22:21–2:30
, , .
21 / 23Practical Engineering≈ approximate level C110:29–10:37
, , , , .
22 / 23SciShow≈ approximate level C110:46–10:56
, , .
23 / 23Practical Engineering≈ approximate level C111:10–11:22
, , .