The formula for the area of a triangle is: area equals one half the base times the height. If you have been given these two values then all you need to do is plug them into the formula and solve. Don't forget to write the correct ending...

Trapezoids can be tricky! Break down the process of finding the area of a trapezoid with an engaging math video. Learners explore area formula and shown exactly how to plug in information, solve, and simplify. 

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.

A circle is a set of all the points that are equal distance from a center point. Learn the definition of some of the terms that are associated with a circle: diameter, radius, chord.

So you know the circumference of a circle but not the radius. This tutorial shows you two different formulas commonly associated with circles, determines which formula to use, then puts the formula to work. You'll have no problem...

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...

Powers of 10 are about moving the decimal around. The instructor illustrates how to move the decimal when it's ten percent or it's one percent. Once you understand this procedure you can do the mental math, in your head of course!

What are compatible numbers? What are they used for? Is it like estimating? Is it like rounding numbers? The teacher will answer these questions and explain how to use compatible numbers.

Watch the instructor change a percent into a decimal in order to multiply the two values to get the percent of a number.

Trying to figure out how much something is marked down? There are a few steps to get your answer so follow along and watch as the instructor takes you through the process.

Simplest form means that all like terms are combined and that there are no parentheses left in the expression. This video shows a simple example of combining the like terms and writing an expression in simplest form.

Constant is just that, constant. The value of a constant does not change. The teacher explains why a constant doesn't change and why values with a variable do change.

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...

So you've got some x-values and some y-values and you want to make a scatter plot. First thing is to make a table for your x and y values. Then make ordered pairs and you can plot them.

Organize your data on a graph. Use the data, pair them up as coordinate pairs, then graph them, resulting in a scatter plot. But how, you ask? Watch this tutorial to learn the step-by-step process needed to draw a scatter plot and...

Given a line on a graph, what's the slope of this line? First, identify two points on the given line. Then, use a formula to find the change in y and then the change in x. This will be represented by rise over run. Watch this video to...

Evaluate the steepness of lines, also known as the slope, by watching this video. A tutor explains what the slope of a line is and compares two different lines to demonstrate slope. A practical introductory video for classes that are...

Given a table of x and y values, is it possible to write a linear equation from this information? There will be several steps involved. First is to use the point-slope formula to find a slope. Then use that slope and one of the ordered...

Are you befuddled after reading this word problem? Not only is it a word problem but there are two variables, and not only does it have two variables, but it is an inequality. Don't pull your hair out! Take a deep breath and watch this...

When you graph an inequality on the coordinate plane you will get two half-planes. The line itself is called the boundary line. One of the halves is called the closed half-plane and the other half is called the open half-plane. How do...

Do you know how to graph a linear equation? If you do then graphing an inequality will not be a problem for you. There are a couple of differences: is the line solid or dashed, and which half plane do you have to shade. Watch this video...

Going to a special event or job interview that requires a tie? Learn how to properly tie your tie with this instructional video. Tip: The video would be perfect for a special education class or for youngsters who want to look their best.

Finally, watch this video for more tips to taking a good photo. This is the third, and last, video of a three-part series. After watching all three parts, have your class share their own photos!

An important factor to consider when taking a good photograph is to include angles. Watch this video to learn about the various types of angles in photography. This is the second video of a three part series.