Khan Academy

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автор  дата 09.01.2007
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How to add and subtract fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/e/adding_fractions_with_common_denominators?utm_source=YTdescription&utm_medium=YTdescription&utm_campaign=YTdescription Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/v/adding-fractions-with-unlike-denominators?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/v/adding-fractions-with-10-and-100-as-denominators?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off! About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Pre-Algebra channel:: https://www.youtube.com/channel/UCIMlYkATtXOFswVoCZN7nAA?sub_confirmation=1
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автор  дата 13.04.2017
A conversation with Google CEO Sundar Pichai.
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автор  дата 11.10.2012
Find out exactly where the heart rests in your body and what it does. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by ...
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автор  дата 12.06.2014
Did you know that over 7 million people are taking at least one course online? Sal Khan got the ball rolling in 2006 when he founded the Khan Academy.
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Common terms describing the ways elements are classified in the periodic table. Created by Jay. Watch the next lesson: ...
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автор  дата 31.12.2013
Created by Sal Khan. Watch the next lesson: ...
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автор  дата 06.09.2018
Educator and entrepreneur Sal Khan is working to bring free education to the world. The founder of Khan Academy, a non-profit organization that offers free ...
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автор  дата 19.08.2014
Khan Academy is on a mission to unlock the world's potential. Most people think their intelligence is fixed. The science says it's not. It starts with knowing you can ...
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автор  дата 14.08.2014
Short video going over the idea backed by research that your brain really is like a muscle: the more you use it, the stronger it gets. Join the You Can Learn ...
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автор  дата 11.12.2009
Overview of the Krebs or Citric Acid Cycle Watch the next lesson: ...
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автор  дата 11.10.2012
Learn how blood flows through the heart, and understand the difference between systemic and pulmonary blood flow. Rishi is a pediatric infectious disease ...
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автор  дата 13.09.2012
Find out what a systolic and diastolic blood pressure mean. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi ...
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автор  дата 06.05.2011
Overview of Communism and Marxist-Leninist states. Created by Sal Khan. Watch the next lesson: ...
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автор  дата 11.09.2009
Alpha, Beta, Gamma Decay and Positron Emission Watch the next lesson: ...
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автор  дата 12.07.2018
Khan Academy Kids is a free, fun educational program that will inspire a lifetime of learning and discovery for young children. Download here: ...
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автор  дата 01.07.2015
Khan Academy Türkçe Direktörü Alp Köksal, Khan Academy'nin kurucusu Salman Khan'dan sonra TED Talks sahnesinde eğitim reformu, yeni teknolojilerin ...
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автор  дата 26.09.2016
Would you choose to build a house on top of an unfinished foundation? Of course not. Why, then, do we rush students through education when they haven't ...
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автор  дата 12.04.2016
আগামী ও গ্রামীণফোনের যৌথ প্রচেষ্টায় বিশ্বখ্যাত শিক্ষাবিষয়ক ওয়েবপোর্টাল...
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автор  дата 29.01.2016
"This is the first time I have met him today, I have heard so much about him and have been wanting to meet him. We share the same name and he does a ...
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автор  дата 10.08.2015
Once again, fractions are our friends as we use them to find a percentage. You'll also see a couple of different ways to arrive at the answer. Practice this lesson ...
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