What is Algebra i: Definition and 74 Discussions
In contemporary education, mathematics education is the practice of teaching and learning mathematics, along with the associated scholarly research
Researchers in mathematics education are primarily concerned with the tools, methods and approaches that facilitate practice or the study of practice; however, mathematics education research, known on the continent of Europe as the didactics or pedagogy of mathematics, has developed into an extensive field of study, with its concepts, theories, methods, national and international organisations, conferences and literature. This article describes some of the history, influences and recent controversies.
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Researchers in mathematics education are primarily concerned with the tools, methods and approaches that facilitate practice or the study of practice; however, mathematics education research, known on the continent of Europe as the didactics or pedagogy of mathematics, has developed into an extensive field of study, with its concepts, theories, methods, national and international organisations, conferences and literature. This article describes some of the history, influences and recent controversies.
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Some algebra I don't understand: Solve for R
The variable is already isolated on one side. I dont' know how to solve for R though. Any help? Thank you.- Jaccobtw
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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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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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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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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
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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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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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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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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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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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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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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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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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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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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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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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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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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
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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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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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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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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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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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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
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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
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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How to write basic expressions with variables | 6th grade | Khan Academy
Learn how to write basic algebraic expressions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-m...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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How to write expressions with variables | Introduction to algebra | Algebra I | Khan Academy
Learn how to write simple algebraic expressions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introdu...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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How to write algebraic expressions with parentheses | Algebra I | Khan Academy
Learn how to write algebraic expressions that involve grouping quantities in parentheses. Practice this lesson yourself on KhanAcademy.org right now: https:/...- RooksAndBooks
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- algebra i expressions khan academy sal khan
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Dependent and independent variables exercise: the basics | Algebra I | Khan Academy
Here we have a problem that asks us to identify which variables are dependent and independent. Hint: independent variables are not influenced and remain unch...- RooksAndBooks
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- algebra i dependent variables independent variables khan academy sal khan
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- Category: Basic Algebra