Khan Academy
Khan Academy is a nonprofit providing a free, world-class education for anyone, anywhere. Our interactive practice problems, articles, and videos help students succeed in math, biology, chemistry, physics, history, economics, finance, grammar, and many other topics.
Khan Academy provides teachers with data on how their students are doing so they can identify gaps in learning and provide tailored instruction. We also offer free personalized SAT and LSAT practice in partnership with the College Board and the Law School Admission Council.
Our resources have been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy each month.
Want to extend your learning beyond YouTube? Practice what you've just discovered for free: www.khanacademy.org
Energy changes in chemical reactions (part 2) | Middle school chemistry | Khan Academy
Energy changes in chemical reactions (part 1) | Middle school chemistry | Khan Academy
Program design: bakery inventory | Intro to CS - Python | Khan Academy
Engineer, Device | Vocabulary | Khan Academy
Experiment, Inventor, Discovery | Vocabulary | Khan Academy
Research, Solution, Recognize | Vocabulary | Khan Academy
Courageous, Description, Mythology | Vocabulary | Khan Academy
Admire, Inspire | Vocabulary | Khan Academy
Ability, Heroic, Villain | Vocabulary | Khan Academy
Course tour for teachers | Intro to CS - Python | Khan Academy
Worked examples: Balancing chemical equations | Middle school chemistry | Khan Academy
Worked examples: Balancing more complex chemical equations | Middle school chemistry | Khan Academy
Dictionary iteration | Intro to CS - Python | Khan Academy
Using examples to make a point | Reading | Khan Academy
Chemical equations | Middle school chemistry | Khan Academy
Represent two step word problems
Due process and the right to privacy | AP US Government & Politics | Khan Academy
Asking questions about data in bar graphs
Representing one step word problems
Two step word problems with estimation
Adding and subtracting two step word problems
Counting U.S. dollars and coins
Two step word problem (double subtraction)
Solving word problems with estimation
Patterns in a multiplication table
Representing word problems
Solve division word problems
Solve division word problems 2
Solve multiplication word problems
Picture and bar graphs