### We found 1,377 resources with the concept equations

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#### SAT Prep: Test 2 Section 6 Part 1

For Students 9th - 12th
Using The Official SAT Study Guide, Sal begins another review session of eighteen problems, six of which are addressed in this video. The problems involve variables in linear equations, angles and parallel lines, and ratios. One problem...
8:31
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#### SAT Prep: Test 6 Section 7 Part 4

For Students 9th - 12th
Clarifying that speed matters more than rigor on the SAT, Sal takes care to show students the most efficient and easiest ways to solve various math problems. Those who get stuck on certain types of problems would benefit from his...
8:31
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#### SAT Prep: Test 2 Section 9 Part 4

For Students 9th - 12th
Price increases in real life aren't enjoyable, but Sal's enthusiasm and easygoing explanation makes the question on increasing prices on the practice SAT fun! Showing students how to easily work through problems involving the Pythagorean...
8:12
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#### SAT Prep: Test 7 Section 8 Part 2

For Students 9th - 12th
Continuing his SAT review session, Sal explores problems with slopes, linear equations, and congruent angles. He begins problem 10 (geometry) but finishes the problem in the next video.
7:36
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#### SAT Prep: Test 1 Section 9 Part 4

For Students 9th - 12th
Sal tackles problems 12-14 of the practice SAT, which deal with linear equations (with negative numbers and radicals). Demonstrating more than one way to solve the problems, Sal takes care to note the most efficient ways to still arrive...
5:44
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#### SAT Prep: Test 1 Section 9 Part 5

For Students 9th - 12th
Finishing up this practice test, Sal shows how to complete the graphing and linear equations in problems 13-14. Students will rest assured after seeing him deftly navigate the ins and outs of these diagrams, making the SAT seem less...
1:45
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#### SAT Prep: Test 3 Section 4 Part 5

For Students 9th - 12th
The last part of problem 18 is the focus of this short video. Sal picks up where he left off, factoring the end of the linear equation, and reminding students to view his video on factoring if they are still confused.
3:58
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#### Graphing Using X and Y Intercepts

For Students 9th - 11th
After defining intercept, Sal solves a simple equation to identify each intercept and then plots the line on a graph. This video would quite nicely complement an introductory lesson on graphing.
3:57
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#### Equation of a Line 2

For Students 9th - 11th
When students are ready to use the slope and a coordinate pair to determine the equation of a line using slope-intercept form, then they will be ready to watch this video. Sal does a fantastic job explaining this concept.
5:29
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#### Consistent and Inconsistent Systems

For Students 9th - 11th
First Sal defines consistent and inconsistent equations. He then evaluates a system of linear equations to determine if they are consistent or not. This resource is very clear and would be a wonderful video to show prior to a test or at...
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#### Solving the Unknown with Algebra: Lesson 3: Functions and Formulas/Square Roots

For Teachers 6th - 9th Standards
This lesson has a number of fun worksheets for a pre-algebra or beginning algebra class. The main emphasis of this lesson is functions, formulas, and looking at square roots. It is the third lesson in a series on solving for unknowns,...
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#### Intercepting Villans Using the Correct Rate

For Teachers 4th - 8th
A Cyberchase video introduces the distance = rate x time equation. Participants then calculate answers to proposed problems and graph a series of results that is then incorporated into a game to help cement the concept. A thorough and...
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#### Wacky Water World: Student Worksheet

For Students 5th - 8th
This well-designed math worksheet invites learners to work in pairs in order to determine which plan is the better value when going to an amusement park. Plan A and Plan B each have different admission fees, and different rates per ride....
9:12
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#### SAT Prep: Test 8 Section 8 Part 1

For Students 9th - 12th
Bringing the Khan Academy SAT video series to an end, Sal uses The Official SAT Study Guide to complete the final 16 problems (page 867). In this video, he solves problems 1-7 quickly and proficiently.
9:19
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#### SAT Prep: Test 4 Section 4 Part 3

For Students 9th - 12th
Math students who have a hard time with the speed of their problem solving will benefit from this video. Sal tackles increasingly complicated geometry and algebra problems in a way that shows them how to find the correct answer - quickly.
9:26
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#### SAT Prep: Test 2 Section 3 Part 3

For Students 9th - 12th
Covering geometry, linear equations, and mathematical patterns, Sal discusses problems 9-12 on the practice SAT. His easygoing manner and clever calculations will keep students' interest far longer than reviewing SAT questions from a...
9:46
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#### SAT Prep: Test 3 Section 8 Part 3

For Students 9th - 12th
Geometry and algebra are equally represented in this video, which covers problems 10-14 on the practice SAT. As always, Sal is the expert of quick, efficient ways to solve problems - especially helpful for students who have a difficulty...
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#### Applying Properties to Variables

For Teachers 8th
Eighth graders combine like terms in this properties of variables lesson. Using named items (stars, moons and hearts), they combine like terms using variables. They use the distributive property to combine like terms. Finally, they write...
5:19
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#### Graphical Systems Application Problem

For Students 9th - 11th
Sal evaluates a word problem and then solves by graphing systems of equations. This problem would be great as a daily challenge, as concept review, or as a homework assignment. Show this video only after the students have had a chance to...
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14:30
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For Students 9th - 12th Standards
Add a little algebra to the geometry. Class members learn about the Addition Postulate for segments and angles. The pupils use their knowledge of solving equations to find lengths of segments and measures of angles. Individuals apply...
8:34
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#### Solve One Step Equations with Fractions

For Students 8th - 11th Standards
Fractions do not cause a different process. Pupils watch as the narrator solves five one-step equations that contain fractions. The scholars see that the process is the same, though they need to use fraction arithmetic to arrive at a...
6:08
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#### Solving Equations Using the Story of x (Part 2)

For Students 8th - 11th Standards
The story continues with more complex equations. Learners see that using the story method works even with multi-step equations. Pupils learn the process of undoing a description of a multi-step expression to solve an equation containing...
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#### Expressions and Equations

For Students 6th Standards
Variables may be unknown, but expressions and equations are easy to understand. Pupils learn how to write, evaluate, and simplify numeric and algebraic expressions. They also investigate how to write and solve simple equations and...
6:27
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#### Solving Equations Using the Story of x (Part 1)

For Students 8th - 11th Standards
Tell the story of solving an equation. With words and symbols, viewers learn to describe what is happening in an equation. Using that description, pupils reverse the story to arrive at the value of x that makes the equation true.