Sal has recorded over 1000 YouTube videos available at khanacademy. org, covering everything from arithmetic and algebra to calculus, physics, chemistry, biology and finance.
Sal zaznamenal přes 1 000 videí na YouTube a dal je k dispozici na khanacademy. org, včetně všeho od aritmetiky, algebry, fyziky, chemie, počtů, biologie a financí.QED QED