01 / 21BBC Ideas≈ approximate level A21:35–1:42 , , .
02 / 21BBC Ideas≈ approximate level B23:20–3:27
.
03 / 21TED-Ed≈ approximate level B24:39–4:45
.
04 / 21TED-Ed≈ approximate level B15:06–5:12
, ’s .
05 / 21CrashCourse≈ approximate level B18:03–8:13
, : .
06 / 21Sprouts≈ approximate level B23:11–3:18
— .
07 / 21Big Think≈ approximate level B23:18–3:26
, , .
08 / 21Sprouts≈ approximate level C11:34–1:40
.
09 / 21The Daily Show≈ approximate level B16:10–6:14
.
10 / 21TED-Ed≈ approximate level B24:37–4:49
, , ’ .
11 / 21The School of Life≈ approximate level C11:54–2:02
.
12 / 21Sprouts≈ approximate level B12:49–3:00
.
13 / 21BBC Ideas≈ approximate level B13:04–3:14
, 's .
14 / 21Big Think≈ approximate level B20:04–0:18
, , .
15 / 21CrashCourse≈ approximate level C15:18–5:30
’s , , , .
16 / 21PBS NewsHour≈ approximate level B23:24–3:36
-- -- " ' .
17 / 21TED≈ approximate level B13:19–3:21
.
18 / 21PBS NewsHour≈ approximate level B23:07–3:16
- .
19 / 21Big Think≈ approximate level C11:04–1:09
.
20 / 21Big Think≈ approximate level C12:10–2:26
, , , , , .
21 / 21NBC News≈ approximate level C11:01–1:12
.