Virtual Nerd
How Do You Find the Intersection of Percent Data by Using a Venn Diagram?
When you first read this word problem it seems pretty daunting. The instructor explains how to identify the variables, how to convert percentage to whole numbers, and how to set up the problem and solve it. She uses a Venn diagram as a...
Virtual Nerd
How Do You Solve For a Variable In Terms Of Another Variable?
Two variables in an equation and you want to solve for one in terms of the other. Watch the instructor demonstrate the steps to isolate each variable. She will use the subtraction rule of equality and the division rule of equality to...
Virtual Nerd
How Do You Find the Area of a Rectangle?
Area=length x width. Locate the value of the length of the rectangle and locate the given width and plug them in to solve. Don't forget to include the units and multiply them too. This three-minute video can be watched at home to review...
Virtual Nerd
How Do You Plug Variables into an Algebraic Expression?
The instructor demonstrates how to plug-in given variables to rewrite an algebraic expression as a numerical expression. Follow the order of operation rules to simplify the numerical expression once you have plugged in those given values.
Virtual Nerd
How Do You Subtract a Negative Number from a Positive Number?
Subtracting an integer is as simple as adding the opposite value. Watch this video to see an example of how to change the signs and then add the two integers. Use this as a review after you have taught this valuable skill to your middle...
Virtual Nerd
How Do You Divide Two Polynomials by Factoring and Canceling?
The rational expression in this example is of a trinomial divided by a trinomial. Learn how to simplify this rational expression. The instructor demonstrates how to factor each trinomial and cancel the like terms to get it in simplest form.
Virtual Nerd
How Do You Use a Proportion to Find a Part of a Whole?
There are two methods for finding the percentage of a number. One is to use an equation, and the other is to use a proportion. This tutorial demonstrates with clear examples how to implement the proportion method. Insert this video into...
Virtual Nerd
How Do You Use Unit Rates to Compare Rates?
Cupcakes, cupcakes, cupcakes! Where shall we buy some cupcakes? There are two stores selling cupcakes and we would like to know which one has the better deal. The instructor demonstrates how to find the unit rate for the cupcakes at each...
Virtual Nerd
What is a Vector?
Define a vector and teach your class about the different parts of a vector with this video. An instructor conveys what a vector is, labeling the parts and providing multiple examples. Learners can re-watch this video if they are...
Virtual Nerd
What's the Product of Powers Rule?
Learning this rule will make your work with exponents much easier. The product of powers rule simply states that if you are multiplying numbers with the same base you can just add the exponents to get your answer. The instructor...
Virtual Nerd
What's Positive Correlation?
If the y-value increases as the x-value increases then you have a positive correlation. Meaning that the line-of-fit has a positive slope.
Virtual Nerd
What are Rates and Unit Rates?
Rate is really a ratio of given quantities that you are comparing that have different units. A unit rate is a rate that has a denominator of one. The teacher gives a couple of examples for each term, rate and unit rate. The instructor is...
Virtual Nerd
How Do You Solve a Word Problem with an Equation Using Addition?
Watch and learn how to set up a simple equation to this word problem. It's very straightforward. And you can solve it too.
Virtual Nerd
How Do You Use a Graph to Reflect a Figure Over the Y-Axis?
A reflection is just what you think it is, a mirror image. So how do you reflect a figure on a graph? Just flip it over. The teacher illustrates how to select a line of reflection (the y-axis) and make the calculations to flip the figure.
Virtual Nerd
What is the Triangle Sum Theorem?
If you add the value of the three interior angles in a triangle will it equal 180 degrees? Yes it will. The instructor illustrates and proves the Triangle Sum Theorem. Follow closely as she explains her proof.
Virtual Nerd
What is the Range of a Relation?
The teacher illustrates several ways to look at what the range is in a set of numbers. Input, output, stem and plot table, graphs, and diagrams are a few of the ways in which she illustrates the meaning of range.
Virtual Nerd
How Do You Solve a More Complicated Interest Problem?
This word problem on simple interest has a bit of a twist. When you read this word problem it boggles the mind. I know, it boggled mine. But never fear, the instructor takes you through this seemingly complicated interest problem...
Virtual Nerd
How Do You Solve a Radical Equation?
Oh my, there's a variable inside the radical . How will you ever solve this one? The teacher explains step-by-step just how to solve this radical equation. She also shows how to check to make sure the answer is the correct one.
Virtual Nerd
How Do You Find the Probability of Independent Events?
A word problem about probability which asks about two events occurring. Are the events independent of each other? Is this a compound events problem? How do you approach solving this word problem? The instructor explains just how to solve...
Virtual Nerd
What is Absolute Value?
As long as you keep in mind that there is no such thing as negative distance, then you will know the meaning of absolute value. The teacher writes on a white board to explore integers on a number line, give a definition of absolute...
Virtual Nerd
How Do You Use a Proportion to Find What Percent a Part is of a Whole?
Percent, parts, whole, how do these pieces fit together to solve a percent problem? Follow along as the instructor shows how to set this up as a proportion problem in order to solve it.
Virtual Nerd
Virtual Nerd: How Do You Graph a System of Equations
In this video lesson students learn how to graph a system of equations that has no solution.
Virtual Nerd
Virtual Nerd: How Do You Use a Scatter Plot to Find a Line of Fit
In this video lesson students learn how to graph data on a coordinate plane and draw a line of fit for that data.
Virtual Nerd
Virtual Nerd: How Do You Determine if a Triangle Is a Right Triangle
In this video lesson a students learns how to determine if a triangle is a right triangle by using the Pythagorean Theorem.