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Khan Academy is a 501(c)(3) nonprofit organization with the mission of 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.

Debugging with test cases | Intro to CS - Python | Khan Academy 4:07
Debugging with test cases | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Free Financial Literacy Course: State Standards-Based Resources for Teachers! 0:58
Free Financial Literacy Course: State Standards-Based Resources for Teachers!
Khan Academy
Khan Academy
Unit testing | Intro to CS - Python | Khan Academy 4:44
Unit testing | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
AI for Writing: A Deep Dive for Administrators 44:26
AI for Writing: A Deep Dive for Administrators
Khan Academy
Khan Academy
Playing Nim with modules | Intro to CS - Python | Khan Academy 5:54
Playing Nim with modules | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Welcome to Khanmigo Teacher Tools 8:09
Welcome to Khanmigo Teacher Tools
Khan Academy
Khan Academy
Creating modules | Intro to CS - Python | Khan Academy 4:25
Creating modules | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Introduction to hands-on science activities 1:36
Introduction to hands-on science activities
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Khan Academy
Hands-On Science with Khan Academy  #KhanAcademyScience #HandsOnLearning #STEM #shorts #khanacademy 0:59
Hands-On Science with Khan Academy #KhanAcademyScience #HandsOnLearning #STEM #shorts #khanacademy
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Khan Academy
How to use TEKS-aligned unit guides on Khan Academy 2:22
How to use TEKS-aligned unit guides on Khan Academy
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Khan Academy
Volume of rectangular pyramids using cubes | Grade 7 (TX TEKS) | Khan Academy 1:30
Volume of rectangular pyramids using cubes | Grade 7 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Volume of rectangular pyramids using rectangular prisms | Grade 7 (TX TEKS) | Khan Academy 4:27
Volume of rectangular pyramids using rectangular prisms | Grade 7 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Texas Teachers! Here's how to use TEKS-aligned unit guides on Khan Academy 2:27
Texas Teachers! Here's how to use TEKS-aligned unit guides on Khan Academy
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Khan Academy
Arizona: Meet Khan Academy & Khanmigo 31:41
Arizona: Meet Khan Academy & Khanmigo
Khan Academy
Khan Academy
College and Khan Academy: District-wide Strategies for SAT Prep 36:50
College and Khan Academy: District-wide Strategies for SAT Prep
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Khan Academy
Lo-Fi Khan Beats to Study/Relax to 1:33:44
Lo-Fi Khan Beats to Study/Relax to
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Khan Academy
How to subtract mixed numbers that have unlike denominators | Fractions | Pre-Algebra | Khan Academy 2:30
How to subtract mixed numbers that have unlike denominators | Fractions | Pre-Algebra | Khan Academy
Khan Academy
Khan Academy
Proportional reasoning with motion | AP Physics 1 | Khan Academy 12:45
Proportional reasoning with motion | AP Physics 1 | Khan Academy
Khan Academy
Khan Academy
Dealing cards with functions | Intro to CS - Python | Khan Academy 5:24
Dealing cards with functions | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Developing kinematic equations from data | AP Physics 1 | Khan Academy 13:04
Developing kinematic equations from data | AP Physics 1 | Khan Academy
Khan Academy
Khan Academy
Nested function calls | Intro to CS - Python | Khan Academy 6:22
Nested function calls | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Constitution 101 - Start the free course today! 2:42
Constitution 101 - Start the free course today!
Khan Academy
Khan Academy
How to Use Khan Academy's Free Courses for Texas Teachers and Students 52:32
How to Use Khan Academy's Free Courses for Texas Teachers and Students
Khan Academy
Khan Academy
Local and global scope | Intro to CS - Python | Khan Academy 4:55
Local and global scope | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
"I can’t imagine teaching without Khanmigo.” 0:20
"I can’t imagine teaching without Khanmigo.”
Khan Academy
Khan Academy
Tracing function calls | Intro to CS - Python | Khan Academy 5:33
Tracing function calls | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Primitive data types | Intro to CS - Python | Khan Academy 0:10
Primitive data types | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
The elements of a poem | Reading | Khan Academy 5:05
The elements of a poem | Reading | Khan Academy
Khan Academy
Khan Academy
Functions | Intro to CS - Python | Khan Academy 4:41
Functions | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Electron configurations with the periodic table | Chemistry | Khan Academy 14:38
Electron configurations with the periodic table | Chemistry | Khan Academy
Khan Academy
Khan Academy
Molecular polarity | Chemistry | Khan Academy 14:23
Molecular polarity | Chemistry | Khan Academy
Khan Academy
Khan Academy
Calculations using Avogadro's number (part 2) | Chemistry | Khan Academy 14:32
Calculations using Avogadro's number (part 2) | Chemistry | Khan Academy
Khan Academy
Khan Academy
Calculations using Avogadro's number (part 1) | Chemistry | Khan Academy 13:30
Calculations using Avogadro's number (part 1) | Chemistry | Khan Academy
Khan Academy
Khan Academy
Games and modularity | Intro to CS - Python | Khan Academy 4:03
Games and modularity | Intro to CS - Python | Khan Academy
Khan Academy
Khan Academy
Double replacement reactions | Chemistry | Khan Academy 12:11
Double replacement reactions | Chemistry | Khan Academy
Khan Academy
Khan Academy
BIG Emotions! Help Kids Identify Feelings With New Lessons From Khan Academy Kids 0:31
BIG Emotions! Help Kids Identify Feelings With New Lessons From Khan Academy Kids
Khan Academy
Khan Academy
Five reasons to use Khan Academy's Intro to CS course #computerscience #educators 0:48
Five reasons to use Khan Academy's Intro to CS course #computerscience #educators
Khan Academy
Khan Academy
Writing a quadratic function to fit data and estimate solutions | Algebra 1 (TX TEKS) | Khan Academy 7:28
Writing a quadratic function to fit data and estimate solutions | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Graphing arithmetic sequences | Algebra I (TX TEKS) | Khan Academy 4:22
Graphing arithmetic sequences | Algebra I (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Graphing geometric sequences | Algebra 1 (TX TEKS) | Khan Academy 3:54
Graphing geometric sequences | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Adding and subtracting polynomials of degree one | Algebra 1 (TX TEKS) | Khan Academy 4:52
Adding and subtracting polynomials of degree one | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Adding and subtracting polynomials of degree two | Algebra 1 (TX TEKS) | Khan Academy 3:09
Adding and subtracting polynomials of degree two | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Determining and representing the domain and range of exponential functions | Khan Academy 6:30
Determining and representing the domain and range of exponential functions | Khan Academy
Khan Academy
Khan Academy
Determining the effects on f(x) = x (multiple transformations) | Algebra 1 (TX TEKS) | Khan Academy 5:16
Determining the effects on f(x) = x (multiple transformations) | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Determining the effects on f(x) = x when replaced by af(x) or f(bx) | Khan Academy 3:19
Determining the effects on f(x) = x when replaced by af(x) or f(bx) | Khan Academy
Khan Academy
Khan Academy
Determining the effects on f(x) = x when replaced by f(x) + d or f(x - c) | Khan Academy 3:26
Determining the effects on f(x) = x when replaced by f(x) + d or f(x - c) | Khan Academy
Khan Academy
Khan Academy
Dividing polynomials of degree one | Algebra 1 (TX TEKS) | Khan Academy 6:46
Dividing polynomials of degree one | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Domain and range from graphs of quadratic and exponential functions | Khan Academy 3:26
Domain and range from graphs of quadratic and exponential functions | Khan Academy
Khan Academy
Khan Academy
Domain and range of lines, segments, and rays | Algebra 1 (TX TEKS) | Khan Academy 4:26
Domain and range of lines, segments, and rays | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy
Identifying key features of exponential functions | Algebra 1 (TX TEKS) | Khan Academy 4:33
Identifying key features of exponential functions | Algebra 1 (TX TEKS) | Khan Academy
Khan Academy
Khan Academy