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  2. Khan Academy - Wikipedia

    en.wikipedia.org/wiki/Khan_Academy

    Khan Academy is an American non-profit [3] educational organization created in 2006 by Sal Khan. [1] Its goal is to create a set of online tools that help educate students. [ 4 ] The organization produces short video lessons. [ 5 ]

  3. Sal Khan - Wikipedia

    en.wikipedia.org/wiki/Sal_Khan

    3. Relatives. Abdul Wahab Khan (grandfather) Salman " Sal " Amin Khan (born October 11, 1976) is an American educator and the founder of Khan Academy, a free online non-profit educational platform with which he has produced over 6,500 video lessons teaching a wide spectrum of academic subjects, originally focusing on mathematics and science. [1]

  4. 3Blue1Brown - Wikipedia

    en.wikipedia.org/wiki/3Blue1Brown

    2018 [ 4 ][ 5 ] Last updated: October 14, 2024. 3Blue1Brown is a math YouTube channel created and run by Grant Sanderson. [ 6 ] The channel focuses on teaching higher mathematics from a visual perspective, and on the process of discovery and inquiry-based learning in mathematics, which Sanderson calls "inventing math".

  5. Trachtenberg system - Wikipedia

    en.wikipedia.org/wiki/Trachtenberg_system

    Trachtenberg system. The Trachtenberg system is a system of rapid mental calculation. The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Russian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration camp.

  6. Chunking (division) - Wikipedia

    en.wikipedia.org/wiki/Chunking_(division)

    Chunking (division) In mathematics education at the primary school level, chunking (sometimes also called the partial quotients method) is an elementary approach for solving simple division questions by repeated subtraction. It is also known as the hangman method with the addition of a line separating the divisor, dividend, and partial ...

  7. 50 Incredibly Cool Things That Are Free Online That Everyone ...

    www.aol.com/52-helpful-things-free-everyone...

    Khan Academy -a non-profit educational organization. Learn with Google - Courses and certifications from Google. Learn with Microsoft on Edx (Free) - Courses from Microsoft.

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