About | Khan Academy
khanacademy.org
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
7:28
Algebra: Linear equations 1 | Linear equations | Algebra I | Khan Academy
YouTubeKhan Academy
已浏览 286.8万 次2006年11月19日
Introduction to the quadratic equation | Quadratic equations | Algebra I | Khan Academy
9:15
Introduction to the quadratic equation | Quadratic equations | Algebra I | Khan Academy
YouTubeKhan Academy
已浏览 148.4万 次2007年1月28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
YouTubeKhan Academy
已浏览 272.3万 次2010年9月15日
热门视频
5K views · 243 reactions | We have an opportunity to jump start new and better ways for students to learn, empower teachers with new tools to supercharge learning, and bring even more high-quality resources to even more learners. As a nonprofit, we’re able to do this thanks to donations from people like YOU.  Every gift now will keep Khan Academy thriving for years to come. khan.co/SupportKhanAcademy | Khan Academy | Facebook
1:15
5K views · 243 reactions | We have an opportunity to jump start new and better ways for students to learn, empower teachers with new tools to supercharge learning, and bring even more high-quality resources to even more learners. As a nonprofit, we’re able to do this thanks to donations from people like YOU.  Every gift now will keep Khan Academy thriving for years to come. khan.co/SupportKhanAcademy | Khan Academy | Facebook
FacebookKhan Academy
已浏览 5081 次3 周前
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
FacebookKhan Academy
已浏览 8.6万 次2017年5月8日
"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
0:23
"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
FacebookKhan Academy
已浏览 6.2万 次2019年2月27日
Khan Academy Science
Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy
13:09
Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy
YouTubeKhan Academy
已浏览 424.6万 次2011年8月1日
Science on Khan Academy
2:44
Science on Khan Academy
YouTubeKhan Academy
已浏览 1.4万 次3 个月之前
Cell parts and their functions | Cells and organisms | Middle school biology | Khan Academy
4:14
Cell parts and their functions | Cells and organisms | Middle school biology | Khan Academy
YouTubeKhan Academy
已浏览 13.6万 次2022年2月28日
5K views · 243 reactions | We have an opportunity to jump start new and better ways for students to learn, empower teachers with new tools to supercharge learning, and bring even more high-quality resources to even more learners. As a nonprofit, we’re able to do this thanks to donations from people like YOU.  Every gift now will keep Khan Academy thriving for years to come. khan.co/SupportKhanAcademy | Khan Academy | Facebook
1:15
5K views · 243 reactions | We have an opportunity to jump start new a…
已浏览 5081 次3 周前
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 …
已浏览 8.6万 次2017年5月8日
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
0:23
"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
15 reactions · 11 shares | Calling all teachers! 戮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 | Facebook
0:28
15 reactions · 11 shares | Calling all teachers! 戮Khan Academy offer…
已浏览 524 次1 周前
FacebookKhan Academy
15K views · 137 reactions | "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 | Facebook
0:22
15K views · 137 reactions | "One of the tools that I choose to use beca…
已浏览 1.6万 次1 周前
FacebookKhan Academy
8.1K views · 231 reactions | Keep your kids learning over the holidays with Khan Academy Kids! ☃️ Our free educational program has 1000's of learning activities for children ages 2-6, including new winter-themed reading, math and coloring pages for the winter break! ❄️ iOS: khan.co/KKidsWinteriOS ❄️ Android: khan.co/KKidsWinterGP ❄️ Amazon: khan.co/KKidsWinterAM | Khan Academy | Facebook
0:05
8.1K views · 231 reactions | Keep your kids learning over the holida…
已浏览 8200 次2 周前
FacebookKhan Academy
Download & Play Khan Academy Kids: Learning! on PC & Mac (Emulator)
Download & Play Khan Academy Kids: Learning! on PC & Mac (Em…
2021年10月4日
bluestacks.com
0:59
Looking for ways to get students thinking like scientists? 🧪 Our free, …
已浏览 3523 次9 个月之前
FacebookKhan Academy
Java Programming Full Course For 2023 | Java For Beginners | Funda…
已浏览 1.4万 次2023年8月24日
YouTubeSimplilearn
9:49
Introduction to Logarithms
已浏览 231.6万 次2007年5月17日
YouTubeKhan Academy
1:44
Introducing: Khan Academy Kids!
已浏览 17.2万 次2019年1月25日
YouTubeKhan Academy
7:06
Java Programming Tutorial - 3 - Downloading Eclipse
已浏览 219.2万 次2009年5月2日
YouTubethenewboston
49:47
Lecture 1 | Programming Methodology (Stanford)
已浏览 255.4万 次2008年7月3日
YouTubeStanford
1:21
Challenge Your First Button Khan Academy
已浏览 2.8万 次2020年2月11日
YouTubeDarknightcerb
10:05
Introduction to logarithm properties (part 2) | Logarithms | Algebra II | …
已浏览 80.3万 次2007年11月15日
YouTubeKhan Academy
0:29
Introduction to Khan Academy Kids
已浏览 130.1万 次2020年3月2日
YouTubeKhan Academy
4:59
HOW TO GET ALL KHAN ACADEMY QUESTIONS CORRECT!!! STILL W…
已浏览 19.1万 次2019年6月5日
YouTubeTricks and V-games
48:20
Lecture 2 | Programming Methodology (Stanford)
已浏览 107.9万 次2008年7月3日
YouTubeStanford
3:52
Intro to Variables | Computer Programming | Khan Academy
已浏览 13.4万 次2014年5月13日
YouTubeKhan Academy Computing
2:48
Get Started with Khan Academy Kids
已浏览 20万 次2020年4月13日
YouTubeKhan Academy Kids
11:59:59
Java Full Course for free ☕
已浏览 1328.1万 次2020年11月9日
YouTubeBro Code
3:50
Incrementing shortcuts | Computer Programming | Khan Academy
已浏览 8.9万 次2015年10月30日
YouTubeKhan Academy Computing
4:00
Readable Code | Computer Programming | Khan Academy
已浏览 1.9万 次2014年5月13日
YouTubeKhan Academy Computing
2:05
Using the Khan Academy Kids Library
已浏览 19.5万 次2020年4月14日
YouTubeKhan Academy Kids
6:03
Making animations | Computer Programming | Khan Academy
已浏览 20万 次2015年10月30日
YouTubeKhan Academy Computing
10:43
Electric power | Circuits | Physics | Khan Academy
已浏览 17.2万 次2016年7月29日
YouTubeKhan Academy Physics
2:47
Learning to Code For Free at Khan Academy
已浏览 4.6万 次2014年1月29日
YouTubeThe Wall Street Journal
5:36
Online Learning for Free - Khan Academy Windows 10 App
已浏览 2876 次2015年9月14日
YouTubeChris' Tutorials
2:32
Getting started with Khan Academy Kids
已浏览 11.7万 次2020年3月20日
YouTubeKhan Academy
观看更多视频
静态缩略图占位符