visualizzazioni
10:15
Khan Academy Exercise Software
8:41
Campaign finance | Political participation | US government and civics | Khan Academy
7:36
Human ear - structure & working | Sound | Physics | Khan Academy
3:24
Soaps and detergents | Carbon and its compounds | Class 10 Chemistry | Khan Academy
7:34
Khan Academy Vision
1:39
Sal Khan: SAT Score Improvement and Official SAT Practice
2:48
Khan Academy Review
8:53
Coercivity & retentivity (Permanent & electromagnets) | Magnetism & matter | Physics | Khan Academy
