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About | Khan Academy
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
2024年4月25日
Khan Academy Math
Algebra: Linear equations 1 | Linear equations | Algebra I | Khan Academy
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Algebra: Linear equations 1 | Linear equations | Algebra I | Khan Academy
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已浏览 286.7万 次2006年11月19日
Introduction to solving an equation with variables on both sides | Algebra I | Khan Academy
8:53
Introduction to solving an equation with variables on both sides | Algebra I | Khan Academy
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Basic addition | Addition and subtraction | Arithmetic | Khan Academy
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Basic addition | Addition and subtraction | Arithmetic | Khan Academy
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Introducing Khan Academy’s New Intro to Computer Science Course with Python
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Introducing Khan Academy’s New Intro to Computer Science Course with Python
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2024年8月15日
Ever heard (or felt) “I’m just not a math person”? Try practicing on Khan Academy: instant feedback, no judgement, a variety of questions, and hints along the way. Give it a try! 👉 khan.co/mathonkhan | Khan Academy
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Ever heard (or felt) “I’m just not a math person”? Try practicing on Khan Academy: instant feedback, no judgement, a variety of questions, and hints along the way. Give it a try! 👉 khan.co/mathonkhan | Khan Academy
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已浏览 1.7万 次2018年4月25日
We’re excited to announce that studying for the SAT for 20 hours on Khan Academy’s free Official SAT Practice is associated with an average score gain of 115 points. That’s nearly double the average score gain compared to students who don’t use our free test prep. Start studying today! http://khan.co/SATStudyonKA | Khan Academy
1:39
We’re excited to announce that studying for the SAT for 20 hours on Khan Academy’s free Official SAT Practice is associated with an average score gain of 115 points. That’s nearly double the average score gain compared to students who don’t use our free test prep. Start studying today! http://khan.co/SATStudyonKA | Khan Academy
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Khan Academy Science
Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy
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Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy
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Introduction to the cell | Cells | High school biology | Khan Academy
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Introduction to the cell | Cells | High school biology | Khan Academy
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Cell parts and their functions | Cells and organisms | Middle school biology | Khan Academy
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Cell parts and their functions | Cells and organisms | Middle school biology | Khan Academy
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已浏览 13.5万 次2022年2月28日
Introducing Khan Academy’s New Intro to Computer Science Course with Python
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Introducing Khan Academy’s New Intro to Computer Science Cours…
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Khan Academy
Ever heard (or felt) “I’m just not a math person”? Try practicing on Khan Academy: instant feedback, no judgement, a variety of questions, and hints along the way. Give it a try! 👉 khan.co/mathonkhan | Khan Academy
0:31
Ever heard (or felt) “I’m just not a math person”? Try practicing on …
已浏览 1.7万 次2018年4月25日
FacebookKhan Academy
We’re excited to announce that studying for the SAT for 20 hours on Khan Academy’s free Official SAT Practice is associated with an average score gain of 115 points. That’s nearly double the average score gain compared to students who don’t use our free test prep. Start studying today! http://khan.co/SATStudyonKA | Khan Academy
1:39
We’re excited to announce that studying for the SAT for 20 hours …
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FacebookKhan Academy
"It's amazing, and it's free. It's free!" – LaToya Grubbs, middle school teacher, Georgia. Join Khan Academy today to help every student succeed with personalized practice. | Khan Academy
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"It's amazing, and it's free. It's free!" – LaToya Grubbs, middle school t…
已浏览 6.2万 次2019年2月27日
FacebookKhan Academy
Khan Academy Goes Way Beyond Math: New Courses Launch for 2024 School Year in STEM, Humanities, Computer Science, and More
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Khan Academy Goes Way Beyond Math: New Courses Launch for 20…
2024年8月6日
Khan AcademyKhan Academy
Calling all teachers! 🧒📣Khan Academy offers K-14 standards-aligned content in math, science, history, art and more. We have 50,000 practice problems for remediation and enrichment. Free for teachers and students!📣 | Khan Academy
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Calling all teachers! 🧒📣Khan Academy offers K-14 standards-aligned con…
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"One of the tools that I choose to use because I believe in the curriculum, the rigor in it, is Khan Academy." – Isai Baltezar, 3rd-grade teacher, California. | Khan Academy
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"One of the tools that I choose to use because I believe in the curric…
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Keep your kids learning over the holidays with Khan Academy Kids…
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Start learning one of the most popular, flexible, and employable …
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