Introduction to physics
9:30
Khan Academy
Introduction to physics
Physics is built on a foundation of math and it seeks to explain all phenomena in the universe. It forms the basis for other sciences like chemistry and biology. Physics uses simple yet elegant math to describe complex phenomena, from galaxies to biological systems. It's about understanding and predicting the universe's complexity based on ...
2015年10月6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 286.9万 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
YouTubeKhan Academy
已浏览 272.4万 次2010年9月15日
Basic addition | Addition and subtraction | Arithmetic | Khan Academy
7:43
Basic addition | Addition and subtraction | Arithmetic | Khan Academy
YouTubeKhan Academy
已浏览 353.5万 次2007年3月10日
热门视频
Henderson–Hasselbalch equation
7:34
Henderson–Hasselbalch equation
Khan AcademyJay
2021年8月26日
332K views · 120 shares | We have all spent sleepless nights over calculus. But what if we told you that there is a better way to learn? Make studying easier with #KhanAcademy #StudyWithKhan | Khan Academy | Facebook
0:31
332K views · 120 shares | We have all spent sleepless nights over calculus. But what if we told you that there is a better way to learn? Make studying easier with #KhanAcademy #StudyWithKhan | Khan Academy | Facebook
FacebookKhan Academy
已浏览 33.3万 次2 周前
Overreacting to chemical reactions? It's time to explore the magic in chemistry! Make your studying easier with #KhanAcademy. #StudyWithKhan | Khan Academy
0:33
Overreacting to chemical reactions? It's time to explore the magic in chemistry! Make your studying easier with #KhanAcademy. #StudyWithKhan | Khan Academy
FacebookKhan Academy
已浏览 34.3万 次2019年1月17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 424.1万 次2011年8月1日
Introduction to the cell | Cells | High school biology | Khan Academy
5:52
Introduction to the cell | Cells | High school biology | Khan Academy
YouTubeKhan Academy
已浏览 31万 次2017年11月30日
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
Henderson–Hasselbalch equation
7:34
Henderson–Hasselbalch equation
2021年8月26日
Khan AcademyJay
332K views · 120 shares | We have all spent sleepless nights over calculus. But what if we told you that there is a better way to learn? Make studying easier with #KhanAcademy #StudyWithKhan | Khan Academy | Facebook
0:31
332K views · 120 shares | We have all spent sleepless nights over cal…
已浏览 33.3万 次2 周前
FacebookKhan Academy
Overreacting to chemical reactions? It's time to explore the magic in chemistry! Make your studying easier with #KhanAcademy. #StudyWithKhan | Khan Academy
0:33
Overreacting to chemical reactions? It's time to explore the magic in ch…
已浏览 34.3万 次2019年1月17日
FacebookKhan Academy
6.2K views · 137 reactions | Ready to get into the Halloween spirit?  Check out our spooktacular Khan Academy Kids update  featuring Halloween reading and math activities, coloring pages, and more! Download for your iPhone or iPad here: khan.co/KhanKidsHalloween | Khan Academy | Facebook
0:05
6.2K views · 137 reactions | Ready to get into the Halloween spirit? …
已浏览 6215 次1 周前
FacebookKhan Academy
70K views · 663 reactions | You got this! Saturday’s SAT is just...
0:57
70K views · 663 reactions | You got this! Saturday’s SAT is just...
已浏览 7.1万 次2 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
587 reactions · 314 shares | "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 | Facebook
0:23
587 reactions · 314 shares | "It's amazing, and it's free. It's free!" – …
已浏览 6.2万 次2 周前
FacebookKhan Academy
0:10
86K views · 204 reactions | Learning with Khan Academy drives real...
已浏览 1.9万 次2 周前
FacebookKhan Academy
1:29
13K views · 296 reactions | Khan Academy needs your help this bac…
已浏览 1.3万 次2 周前
FacebookKhan Academy
1:15
237 reactions · 17 shares | Khan Academy is available for free beca…
已浏览 7945 次3 周前
FacebookKhan Academy
0:36
2.3K views · 988 reactions | Empower students with creative t…
已浏览 9万 次2 周前
FacebookKhan Academy
0:34
2.2K views · 906 reactions | Empower students with creative t…
已浏览 18.6万 次2 周前
FacebookKhan Academy
50:40
24K views · 582 reactions | Taking AP Chemistry? Watch our recent...
已浏览 2.5万 次3 周前
FacebookKhan Academy
0:22
"One of the tools that I choose to use because I believe in the curric…
已浏览 1.6万 次2019年2月27日
FacebookKhan Academy
0:53
34K views · 1.7K reactions | 10 years on and still going strong!  Thank…
已浏览 3.5万 次2 周前
FacebookKhan Academy
1:21
9.9K views · 37 reactions |  Welcome back to Wally's car buyi…
已浏览 1488 次2 周前
FacebookKhan Academy
51:15
Khan Academy Live: SAT Writing
已浏览 7.5万 次2017年5月30日
YouTubeKhan Academy
5:22
Connotation | Reading | Khan Academy
已浏览 31万 次2020年5月20日
YouTubeKhan Academy
4:44
Using Khan Academy
已浏览 14万 次2014年12月18日
YouTubeKhan Academy
0:29
Introduction to Khan Academy Kids
已浏览 130.2万 次2020年3月2日
YouTubeKhan Academy
13:35
Capacitance | Circuits | Physics | Khan Academy
已浏览 73.7万 次2008年5月23日
YouTubeKhan Academy
7:41
Pre Columbian Americas | World History | Khan Academy
已浏览 28.8万 次2017年1月27日
YouTubeKhan Academy
2:48
Get Started with Khan Academy Kids
已浏览 20.1万 次2020年4月13日
YouTubeKhan Academy Kids
10:57
Socrates Plato Aristotle | World History | Khan Academy
已浏览 36.1万 次2017年3月23日
YouTubeKhan Academy
6:48
Wave properties | Wave properties | High School Physics | Khan Acad…
已浏览 3.9万 次2021年7月29日
YouTubeKhan Academy
4:11
Advanced (plural) possession | The Apostrophe | Punctuation | Khan …
已浏览 20.8万 次2016年6月14日
YouTubeKhan Academy
10:06
Introduction to metabolism: anabolism and catabolism | Khan …
已浏览 41万 次2015年8月10日
YouTubeKhan Academy
7:22
Evaluating a source’s reasoning and evidence | Reading | Khan Academy
已浏览 20.7万 次2020年7月13日
YouTubeKhan Academy
8:41
Heat capacity | Thermodynamics | AP Chemistry | Khan Academy
已浏览 5.4万 次2021年4月20日
YouTubeKhan Academy
观看更多视频
静态缩略图占位符