Khan academy Definition and 74 Threads
Khan Academy is an American non-profit educational organization created in 2006 by Sal Khan, with the goal of creating a set of online tools that help educate students. The organization produces short lessons in the form of videos. Its website also includes supplementary practice exercises and materials for educators. All resources are available for free to users of the website and application.
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Help Me Solve This Khan Academy Question: Friction and Initial Velocity
Here's a picture of the question: This is a Khan Academy question and although I could just click on hint to find out what the answer is, I think it would be helpful to still ask this here before looking at the answer over there, so that I know what I did wrong. Thank you in advance to anyone...- Iwanttolearnphysics
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- Replies: 5
- Forum: Introductory Physics Homework Help
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Foundations Textbooks vs Khan Academy for Self Study and PreCalc CLEP
Hi PF, I hope y'all had a great Thanksgiving. Quick question, as I've mentioned before, I am non-traditional college student who is right at just over College Algebra/beginning Trig level in Math. While I am out of university, to make enough money to return, I am wanting to CLEP...- Chandller
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- Replies: 9
- Forum: Science and Math Textbooks
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Conservation of angular momentum
Homework Statement A rod of length D sits at rest on a friction less table. A ball of mass M strikes the end of the rod with a speed V and rebounds with a speed 3v/4 causing the rod to rotate counterclockwise around a fixed axis at one end. The rotational inertia of the rod is I Homework...- Mohammeddev
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- Replies: 2
- Forum: Introductory Physics Homework Help
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Studying Teaching myself math with Khan Academy.... Advice?
Hello, PhysicsForums. Right now, I am studying high school mathematics on Khan Academy, and it is working out great! I also read all of the articles and do the excersizes and I write down everything that I see. I feel that I will achieve mastery of Algebra, Geometry, and Trigonometry in no time...- ToneCoole
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- Khan academy Teaching
- Replies: 16
- Forum: STEM Academic Advising
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MHB Sal Khan Founder of Khan Academy
I am confused. A man named Sal Khan founded the Khan Academy to help struggling students around the globe academically online. Sal had a job making over $100,000 a year and decided to quit his job to teach math online for free. Question: Is Sal a genius? Why is it that certain people in life...- mathdad
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- Khan academy Sal khan
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- Forum: STEM Academic Advising
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What are variables, expressions, and equations? | Introduction to algebra | Algebra I | Khan Academy
Learn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/alg...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to test solutions to equations using substitution | 6th grade | Khan Academy
A solution to an equation makes that equation true. Learn how to test if a certain value of a variable makes an equation true. Practice this lesson yourself ...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Why we do the same thing to both sides of equations | Linear equations | Algebra I | Khan Academy
The example of a scale where we try to achieve balance helps to explain why we do the same thing to both sides of an equation. Practice this lesson yourself ...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to represent a relationship with a simple equation | Linear equations | Algebra I | Khan Academy
Equations are about relationships (no, not girlfriends and boyfriends!) between the two sides of the equation. Let's again use a scale example to help us und...- RooksAndBooks
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- Algebra i Khan academy Sal khan
- Comments: 1
- Category: Basic Algebra
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Intuition for solving one-step equations | Linear equations | Algebra I | Khan Academy
This equation can be simplified through a single step to solve for the variable. Can you help? Practice this lesson yourself on KhanAcademy.org right now: ht...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to divide from both sides of an equation | Linear equations | Algebra I | Khan Academy
Let's get a conceptual understanding of why one needs to divide both sides of an equation to solve for a variable. Watch the next lesson: https://www.khanaca...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to solve one-step equations | Linear equations | Algebra I | Khan Academy
Learn how to solve one-step addition and subtraction equations by adding or subtracting the same thing from both sides of the equation. Watch the next lesson...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Example of solving a one-step equation | Linear equations | Algebra I | Khan Academy
Learn how to solve this equation: a + 5 = 54 Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-lin...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to solve one-step equations with fractions and decimals | 6th grade | Khan Academy
Learn how to solve one-step addition and subtraction equations that have fractions and decimals in them. Practice this lesson yourself on KhanAcademy.org rig...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to solve equations of the form ax = b | Linear equations | Algebra I | Khan Academy
Let's ease into this, shall we? Here's an introduction to basic algebraic equations of the form ax=b. Remember that you can check to see if you have the righ...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to solve equations of the form x/a = b | Linear equations | Algebra I | Khan Academy
Remember that what you do to one side, you have to do to the other. Will you multiply or divide both sides to dump the fraction, x/a? Let's do it together. P...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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How to solve one-step multiplication and division equations with fractions and decimals
"Learn how to solve equations in one step by multiplying or dividing a number from both sides. These problems involve decimals and fractions. Practice this l...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Solving two-step equations | Linear equations | Algebra I | Khan Academy
Here's how we solve a two step equation. It begins with the concept of equality: what we do to one side of the equation must be done to the other. Watch the ...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Solving a more complicated equation | Linear equations | Algebra I | Khan Academy
This example demonstrates how we solve an equation expressed such: ax + b = c. It's a little more complicated than previous examples, but you can do it! Prac...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Example: two-step equation with numerator x | Linear equations | Algebra I | Khan Academy
Solve the equation by isolating the term with numerator x. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algeb...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Basic linear equation word problem | 7th grade | Khan Academy
"Learn how to construct and solve a basic linear equation to solve a word problem. Practice this lesson yourself on KhanAcademy.org right now: https://www.kh...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Word problem: solving equations | Linear equations | Algebra I | Khan Academy
Here's a nifty word problem in which we find the dimensions of a garden given only the perimeter. Let's create an equation to solve! Practice this lesson you...- RooksAndBooks
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- Algebra i Khan academy Sal khan
- Comments: 0
- Category: Basic Algebra
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Linear equation word problem | Linear equations | Algebra I | Khan Academy
Learn how to solve a word problem by writing an equation to model the situation. In this video, we use the linear equation 210(t-5) = 41,790. Practice this l...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Why we do the same thing to both sides: Multi-step equations | Algebra I | Khan Academy
Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/why-of-algebra/v/why-we-do-the-same-thing-to-both-s...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Introduction to solving an equation with variables on both sides | Algebra I | Khan Academy
Sal solves the equation 2x + 3 = 5x - 2. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Example 2: Variables on both sides | Linear equations | Algebra I | Khan Academy
Solving Equations 2 Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequal...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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A clever application of the distributive property to solve a multi-step equation | Khan Academy
Sal solves the equation (3/4)x + 2 = (3/8)x - 4 using the distributive property Practice this lesson yourself on KhanAcademy.org right now: https://www.khana...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Ex 2: Multi-step equation | Linear equations | Algebra I | Khan Academy
Turning a non-linear equation into a linear one. Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/co...- RooksAndBooks
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- Algebra i Khan academy Sal khan
- Comments: 0
- Category: Basic Algebra
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Solving equations with the distributive property | Linear equations | Algebra I | Khan Academy
Solving Equations with the Distributive Property Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving...- RooksAndBooks
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- Algebra i Khan academy Sal khan
- Comments: 0
- Category: Basic Algebra
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Number of solutions to linear equations | Linear equations | Algebra I | Khan Academy
Equation Special Cases Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-ineq...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Equation special cases | Linear equations | Algebra I | Khan Academy
Equation Special Cases Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/solutions-linear-equations/v...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Number of solutions to linear equations ex 2 | Linear equations | Algebra I | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/solutions-line...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Number of solutions to linear equations ex 3 | Linear equations | Algebra I | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/solutions-line...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Solving a consecutive integer problem algebraically | Linear equations | Algebra I | Khan Academy - YouTube
The sum of 4 consecutive odd integers is 136. What are the 4 integers? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.or...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Challenge example: Sum of integers | Linear equations | Algebra I | Khan Academy
Sum of Consecutive Odd Integers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Mixture problems 2 | Linear equations | Algebra I | Khan Academy
Mixture problems 2 Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/basic-r...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Mixture problems 3 | Linear equations | Algebra I | Khan Academy
Mixture problems 3 Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/old-school-equations/v/order-of-...- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Linear equations with unknown coefficients
Linear equations with unknown coefficients- RooksAndBooks
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- Algebra i Khan academy Sal khan
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- Category: Basic Algebra
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Abstract-ness | Introduction to algebra | Algebra I | Khan Academy
The general idea behind the word 'abstract' Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/the-b...- RooksAndBooks
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- algebra i khan academy sal khan
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The beauty of algebra | Introduction to algebra | Algebra I | Khan Academy
Why the abstraction of mathematics is so fundamental Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_al...- RooksAndBooks
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- algebra i khan academy sal khan
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Introduction to the coordinate plane | Introduction to algebra | Algebra I | Khan Academy
Bridging algebra and geometry. What makes linear equations so linear. Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra...- RooksAndBooks
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- algebra i khan academy sal khan
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Why all the letters in algebra? | Introduction to algebra | Algebra I | Khan Academy
Jesse Roe and Sal Khan talk about why we use letters in algebra Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/varia...- RooksAndBooks
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- algebra i khan academy sal khan variables
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What is a variable? | Introduction to algebra | Algebra I | Khan Academy
Our focus here is understanding that a variable is just a symbol that can represent different values in an expression. We got this. Just watch. Watch the nex...- RooksAndBooks
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- algebra i khan academy sal khan variables
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Why aren't we using the multiplication sign? | Introduction to algebra | Algebra I | Khan Academy
Great question. In algebra, we do indeed avoid using the multiplication sign. We'll explain it for you here. Watch the next lesson: https://www.khanacademy.o...- RooksAndBooks
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- algebra i khan academy multiplication sal khan
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- Category: Basic Algebra
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How to evaluate an expression with variables | Introduction to algebra | Algebra I | Khan Academy
Learn how to evaluate an expression with variables using a technique called substitution (or "plugging in"). Watch the next lesson: https://www.khanacademy.o...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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- Category: Basic Algebra
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How to evaluate expressions with two variables | 6th grade | Khan Academy
We've done a few examples together where we were faced with 1 variable. Why not try one that has 2 variables? Practice this lesson yourself on KhanAcademy.or...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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- Category: Basic Algebra
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How to evaluate expressions in two variables with decimals and fractions | 6th grade | Khan Academy
Learn how to evaluate expressions that have two different variables in them by using a technique called substitution (or "plugging in"). Practice this lesson...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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- Category: Basic Algebra
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How to evaluate an expression using substitution | Algebra I | Khan Academy
In this example we have a formula for converting Celsius temperature to Fahrenheit. Let's substitute the variable with a value (Celsius temp) to get the degr...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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Evaluating an algebraic expression in a word problem | Algebra I | Khan Academy
In this example of evaluating expressions, we're dusting off some geometry. On top of that, it's a word problem. We're seeing how different concepts in math ...- RooksAndBooks
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- algebra i khan academy sal khan word problem
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Evaluating an algebraic expression with exponents | 6th grade | Khan Academy
We're going to put our order of operations knowledge to work as we evaluate this expression. Exponents, specifically, are our focus here. Watch the next less...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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- Category: Basic Algebra