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489 resources with the keyterm variable

Videos (Over 2 Million Educational Videos Available)
Algebra 50 - Three Variable Systems in the Real World - Problem 2 Video
10:23
Algebra 50 - Three Variable Systems in the...
Prepositional Phrases for Kids | English Grammar Video Video
11:22
Prepositional Phrases for Kids | English...
The Circulatory System Part 1: The Heart Video
8:55
The Circulatory System Part 1: The Heart
Other Resource Types ( 489 )
8:53
Lesson Planet

Equations 3

For Students 6th - 9th
Sal illustrates more involved equations in this last video in a series. It follows "Simple Equations" and "Equations 2". He continues to use color-coded markings to help increase student understanding of a more complicated equation:...
8:41
Lesson Planet

Equations 2

For Students 6th - 9th
"Equations 2" is the second video in this series. It follows the presentation titled "Simple Equations." This presentation shows how to solve slightly more complicated algebraic equations, like Ax+B=C. Sal uses visuals (like a number...
11:06
Lesson Planet

Simple Equations

For Students 6th - 9th
Basic algebraic equations of the form Ax=B are dissected. Sal encourages viewers to fully understand what the equations represent prior to learning how to manipulate them. Furthermore, he teaches students how to solve the equations...
Lesson Planet

Two-Variable Relationships in Real-World Problems

For Teachers 5th - 7th Standards
When tending to CCSS.Math.Content.6.EE.9, this complete resource fits the bill. Learners work in groups or pairs to assign two variables to several real-world problems. They write equations, complete tables of solutions, and then...
Lesson Planet

Correlation of Variables by Graphing

For Teachers 7th - 10th
Middle and high schoolers use a spreadsheet to graph data. In this graphing instructional activity, learners determine how two parameters are correlated. They create a scatter plot graph using a computer spreadsheet.
Lesson Planet

Variable Machine

For Teachers 4th - 6th
What a fantastic way to teach your pre-algebra class about variables! All you need is two strips of paper per student to create "variable machines." They write the alphabet on one strip, and number zero-25 down the other, wrapping each...
1 In 1 Collection
Lesson Planet

Better By Design

For Teachers 5th - 7th Standards
Which modification is the best? Using the scientific method, pairs determine the effects of each control surface on the distance of a glider's flight. The activity, section 16 in a 22-part unit on aviation, allows pupils to gain a better...
1 In 1 Collection
Lesson Planet

Airplane Tails and Wings: Are You in Control?

For Teachers 5th - 7th Standards
Keep everything under control. The lesson, the 16th segment in a 22-part unit, provides a more detailed look at the parts of a plane, specifically the control surfaces. Pupils learn about the construction of the wings and the tails and...
Lesson Planet

Opening a Business

For Teachers 5th - 7th Standards
A resource-rich lesson plan helps you teach how to use variables for solving problems. Collaborative groups sort mathematics phrases into categories, pretend to open a business, and answer questions to find out how useful variables are...
Lesson Planet

Study Jams! Addition & Subtraction Equations

For Students 5th - 7th Standards
Zoe is decorating a cake for her grandpa's birthday and needs to know how many more candles to add. Follow along as she explains how to set up and solve algebraic equations in this step-by-step presentation. Equations with negative...
1 In 1 Collection 3:55
Lesson Planet

Read and Write an Algebraic Expression Containing a Variable

For Students 5th - 7th Standards
How do you write five less than a number as a mathematical expression? Show algebra learners how to read and write algebraic expressions by using variables with this introductory video. The first in a series, the video models how to...
3:25
Lesson Planet

How Do You Solve a Decimal Inequality Using Addition?

For Teachers 8th - 9th
In order to solve this inequality use the addition property of inequality to isolate the variable. Don't forget that these are decimal numbers. So be sure to line up the decimals according to the rules of adding decimals.
3:48
Lesson Planet

How Do You Solve an Equation With Fractions With The Same Denominators Using Addition?

For Teachers 8th - 11th
You have an equation with an unknown variable and fractions. How do you solve this kind of equation? You can do it using the addition property of equality to first isolate the variable. Then, combine the fractions and since they have a...
2:13
Lesson Planet

How Do You Set Up a Percent Proportion From a Word Problem?

For Teachers 6th - 9th
So x amount of people were surveyed and 68 of them said algebra was their favorite subject. Set up a percent proportion to identify the number of people surveyed. That's often the hardest part, setting up the equation. So observe the...
6:01
Lesson Planet

What's a Coefficient?

For Teachers 8th - 9th
All variables have a coefficient. Integers, decimals, and fractions can represent coefficients, positive or negative. And there are times there is no written coefficient which means it's really just 1. This short video demonstrates and...
2:10
Lesson Planet

How Do You Use Subtraction to Solve an Inequality Word Problem?

For Teachers 7th - 10th
Don't be afraid of this word problem because it has an inequality. There is only one variable and this inequality can be solved in one step. It's pretty straightforward.
2:21
Lesson Planet

How Do You Solve an Inequality With Variables on Both Sides?

For Teachers 6th - 9th
A direct instructional video of how to solve an inequality when you have the same variable on both sides of the inequality sign, this resource could be used in class or at home.
4:19
Lesson Planet

How Do You Find Angle Measures for Adjacent Angles?

For Teachers 6th - 10th
Two angles with given values are adjacent. Together they are 172.5 degrees. How do you find the degree of one of the angles? You will have to write an algebraic equation with the given information to solve for the value of the variable....
3:06
Lesson Planet

How Do You Evaluate an Expression with Exponents?

For Teachers 7th - 9th
An algebraic expression and a given value for the variable. Use the substitution property of equality to plug in the given value and solve the expression. Be careful and use the order of operations correctly because there is an exponent...
2:16
Lesson Planet

How Do You Find the Factors of a Monomial?

For Teachers 8th - 10th
Usually you are supposed to write things in simplest form, but now you need to go backwards and write it in factored form. Some of you may look at it and think it's expanded form. Either way you look at it, watch the teacher break it...
4:50
Lesson Planet

What is the Substitution Property of Equality?

For Teachers 6th - 9th
Explore the substitution property of equality with this video. The resource uses examples to define the property, showing how to replace a variable with a value. Use this to help struggling learners or as review for an upcoming test. A...
6:19
Lesson Planet

What is a Quadratic Function?

For Teachers 8th - 9th
This is an introductory video on how to identify a quadratic function. This video explains what a quadratic function is and what the graph of a quadratic function looks like. The instructor goes through four examples of quadratic...
2:57
Lesson Planet

How Do You Solve a Two-Step Equation by Multiplying by a Reciprocal?

For Teachers 8th - 11th
Got a fraction in your equation? Don't like that fraction? Just multiply both sides by the reciprocal of that fraction to get rid of it. Now you can solve the problem using the steps necessary to isolate your variable. Don't forget to...
3:10
Lesson Planet

How Do You Solve a Word Problem with a Rational Equation?

For Teachers 8th - 11th
Translate a word problem into a rational equation. This word problem might cause some to pause and ponder, and some to just give up and skip the problem altogether. It does involve some fractions, so watch this video and get a better...