01 / 17Practical Engineering≈ approximate level A210:54–10:59 , , (!)
02 / 17Practical Engineering≈ approximate level B21:02–1:08
, .
03 / 17Practical Engineering≈ approximate level B26:05–6:11
.
04 / 17Practical Engineering≈ approximate level A21:13–1:18
.
05 / 17TED-Ed≈ approximate level B22:19–2:30
“ ,” , .
06 / 17TED-Ed≈ approximate level B12:30–2:39
, .
07 / 17Practical Engineering≈ approximate level C12:56–3:03
.
08 / 17Tom Scott≈ approximate level B12:11–2:14
, .
09 / 17Tom Scott≈ approximate level B13:14–3:20
, .
10 / 17TED-Ed≈ approximate level B21:04–1:13
, .
11 / 17Practical Engineering≈ approximate level B25:05–5:13
, , .
12 / 17Practical Engineering≈ approximate level B14:43–4:47
.
13 / 17Tom Scott≈ approximate level A21:34–1:39
.
14 / 17Tom Scott≈ approximate level C13:19–3:30
, , , , .
15 / 17Practical Engineering≈ approximate level B27:09–7:18
, ’s .
16 / 17MKBHD≈ approximate level C11:44–1:54
, , , , .
17 / 17Practical Engineering≈ approximate level C11:16–1:29
, ’s , , , - .