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How To : Apply a grain texture effect using Photoshop

In this how-to video, you will learn how to make grain textures in Photoshop. First, click add layer mask to an open image. Add a filter to this mask and by going to the texturizer option. Adjust the settings to your liking. Click okay to continue. The mask will make the textu ...more

How To : Factor trinomials in a very simple way

In this video, they demonstrate how to factor a trinomial. A trinomial is a polynomial with a quadratic term in the form, ax^2+bx+c. To factor this polynomial first multiply the a and c term. You must fine two numbers that multiply to a*c and add up to b. Once you have figured ...more

News : Finally, a New Drug Against 'Untreatable' Gonorrhea

Gonorrhea infections reached a peak in 1975, then decreased until 2009, when infection rate started rising and has increased each year since. With the rise of antibiotic resistance, those numbers are only going to get worse — unless we find new treatments against the bacteria. ...more

How To : Find the percentage of a number

In this tutorial the author explains of how to compute percentages of a given number. He explains that x percent of some number y is x multiplied by y and divided by 100. He says that of means multiply and percentage means for hundred. He goes on and explains this concept with ...more

How To : Defrost food safely

Thawing frozen food on the countertop or in warm water may put your family at risk from food-borne bacteria. Keep them safe by following these methods. Step 1: Know the dangers Keep food out of “the danger zone” – between 40 and 140 degrees. Freezing stops bacteria from growi ...more

How To : Solve 3 equations with 3 variables

You can solve 3 equations having 3 variables. Here are the 3 equation examples: x+2y+z=10. 2x-y+3z=-5. 2x-3y-5z=27. The goal is to reduce to 2 equations having 2 variables. Multiply bottom equation by (-1). Rewrite 2nd and 3rd equation. 2x-y+3z=-5. Add -2x+3y+5z+-27. Equals 2y ...more

How To : "Flip and go" to divide fractions

In this video, we learn how to flip and go to divide fractions. First, take your equation and then look at the fractions that you are given. If you work this out and end up with a fraction that can be reduced further, then reduce it. If you understand how to multiply fractions ...more

How To : Remember how to divide fractions with a song

In this video tutorial the author shows how to divide fractions by singing the songs "I Can Divide". He sings a wonderful and funny song about how he is petrified about fractions and in the song somewhere he says that to divide just invert and multiply. He says that division o ...more

How To : Divide fractions step by step

In this tutorial, we learn how to divide fractions step by step. First, you will need to know the different parts of the fraction, the numerator and the denominator. After you know these, you will flip the second fraction in the equation so the numerator is at the bottom and t ...more

How To : Balance chemical equations

Not sure how to balance a chemical equation? According to the rules of chemistry, matter must be conserved in chemical reactions. When you balance a chemical equation, you account for all of the matter in the reaction. What you will need: • An unbalanced chemical equation • ...more

How To : Change mixed numbers to improper fractions

In this Math tutorial, you will learn how to convert a mixed number into an improper fraction. The narrator explains the process in a very concise yet simple manner that will make math problems involving mixed numbers so much easier to solve. The general idea is to multiply th ...more

How To : Calculate percentages from fractions

Wondering how to calculate percentages from fractions? Just follow the few steps as given below. Firstly, take any fraction and multiply with 100. The resultant value that you get is nothing but the percentage itself. For example, let us take a fraction value - 1/2; we want ...more

Do mathematical card tricks : "The Power Of Three"

Ever wanted to perform a magic trick but didn't really have the hand eye skills most magicians seem to have? Always thought magic can be performed only by face-to-face and not long distance (say over the phone)? Well think again as I teach you how to do the Mathematical card t ...more

How To : Divide exponents with the quotient rule

Exponent of a number is nothing but the number multiplied to it self the exponent number of times. So five squared it equal to five multiplied to it self. Now when an exponential number is divided with another such number the result is the number raised to the different of the ...more

How To : Convert Celsius to Fahrenheit

Can't remember how to convert Celsuis temperatures to Farenheit? If your old science lessons are escaping you, then your answer is here. Use the simple formula outlined in the steps in this video to make the proper conversion every time. Step 1: Multiply by 2 Multiply the tem ...more

How To : Solve math problems using proportions

Proportions or ratios are fundamental concepts of mathematics. A proportions is an equation that states that two ratios are equal. Hence proportion can be written in two ways as a:b=c:d or a/b=c/d. In these equations a and d are called as extremes and b,c are called as means. ...more

News : How Calcium Sets Off a C Diff Infection

Unfortunately, the very places we go to receive health care put us at risk for becoming infected with superbugs, bacteria exposed to so many antibiotics that they have become immune to their effects. Clostridium difficile (C. diff) is one such bacteria. It causes inflammation ...more

How To : Solve for ratios and proportions

In this tutorial the instructor shows how to solve ratios and proportions. He gives a two step approach to solve an equality of two fractions in which the value of a variable in unknown. He says that in the first step we should cross multiply the numbers across the diagonal. I ...more

How To : Find the sum of reciprocals of complex numbers

In this tutorial the instructor shows how to calculate the sum of reciprocals of complex numbers. If you have to find out the sum of the reciprocals of two complex numbers first you will have to find out the least common multiple of the denominators. To do this multiply the nu ...more

How To : Do a fun fast multiplication trick

This how-to video is about multiplying numbers in a very quick and in a new manner. Multiplication of two - 2 digit number is explained in this video, To do this multiplication we need to follow three steps, let's follow this method with an example, let's say that we want to ...more

How To : Apply the 6th Law of Exponents

This is a video tutorial in the Education category where you are going to learn how to apply the 6th Law of Exponents. The 6th law of exponents says, to raise a product to a power, you can multiply each of its factors by the same power. For example if you have (acm) to the pow ...more

How To : Hack Dragon Boy with Cheat Engine (11/19/09)

The maximum is a 1000 gold. In order to hack and win the game, he goes through several techniques choosing a level to start out, once a level completed and he collects one gold. He then selected a cheat engine in his Firefox page. He advised in order to hack the game, multiply ...more

How To : Find the area of a hexagon

In this video you can learn how to find the area of a hexagon. Visualize that the hexagon is made up of six equilateral triangles, with each side of the hexagon as the base for a different triangle. Determine the length of any triangle side by measuring it. Each side should be ...more

How To : Create A Nice Curtain In GIMP

Hello everyone, This is my first tutorial posted on WonderHowTo and as a starter I wanted to show you how to make a nice curtain in GIMP, the free Photoshop alternative. Even though GIMP does not have all the features of his expensive brother, you can still do some cool desig ...more

How To : Darken the sky in an image in Photoshop

This Photoshop tutorial shows you how to use masks, multiply blend modes and burn tools in Photoshop to very easily darken a sky. Darken the sky in an image in Photoshop. Click through to watch this video on flickr.com

How To : Simplify complex rational expressions

In order to simplify complex rational expressions, it is important to be able to find the lowest common denominator. Complex rational expressions are fractions that are divided by fractions. When you have found the lowest common denominator, then, you should multiply both frac ...more

How To : Follow three rules to balance chemical equations

In this video, we learn how to follow three rules to balance chemical equations. The first rule is that you need to start by balancing elements that appear in only one reactant and one product. The second rule is that you need to multiply through by common factors. You must re ...more

How To : Solve an equation by the distributive property

In this simple tutorial the tutor shows how to solve equation by the distributive property. He states that when there is a number which is multiplied to a full equation, we have to multiply each and every term of that equation by that multiplying number. This is called the dis ...more

How To : Simplify square roots in algebra

Watch the following video to understand the steps necessary when simplifying square roots. To simplify expressions with radicals, follow these simple steps: • Write the radicand (the number underneath the radical sign) as a product of prime numbers. For larger numbers you ca ...more

How To : Solve proportions

This video describes about how to solve multiple proportions. The first step describes how to cross multiply and solve the equation. There are three proportions solved in this video and they are explained how to arrive the final answer. The first step is multiplying the denomi ...more

How To : Solve rational equations easily

This video revolves around solving rational equations in Algebra 2. When you are given a rational equation, you have to find the greatest common factor and multiply all fractions to get that common factor. If a fraction already has that common factor, then no further step is n ...more

How To : Use simple formulas to do math in Excel 2007

Take a look at this instructional video and learn how to use simple formulas in Microsoft Office Excel 2007 to add, subtract, multiply, and divide. For example, you can use a prewritten formula called the SUM function to find totals, such as your total monthly expenses. Excel ...more

How To : Divide proper fractions

This video shows you how to easily divide proper fractions. In the first step, you have to calculate how many times does the denominator fit into the numerator. You need to divide the numerator by the denominator. If the denominator does not fit into the numerator, you have to ...more

How To : Simplify radical expressions

In this video the instructor shows who to simplify radicals. If you have a term inside a square root the first thing you need to do is try to factorize it. First factorize the numerical term. Write down the numerical terms as a product of any perfect squares. Now split the ori ...more

How To : Simplify complex fractions

In this video you can learn how to simplify complex fractions. Look at the example in the illustration. To simplify this complex problem, you would first add the number 1 under the whole number in the denominator, to make it a fraction. Then change it from a division problem b ...more

How To : Create clouds over a sea in Photoshop

Pixel Perfect is the "perfect" show to help you with your Photoshop skills. Be amazed and learn as master digital artist Bert Monroy takes a stylus and a digital pad and treats it as Monet and Picasso do with oil and canvas. Learn the tips and tricks you need to whip those dig ...more

How To : Create fabrics in Photoshop

Pixel Perfect is the "perfect" show to help you with your Photoshop skills. Be amazed and learn as master digital artist Bert Monroy takes a stylus and a digital pad and treats it as Monet and Picasso do with oil and canvas. Learn the tips and tricks you need to whip those dig ...more

How To : Solve the circumference of a circle

In this video, we learn how to solve the circumference of a circle. First, you will need to find the radius. For an example, let's say the radius is 5 inches. After you find this, you need to multiply this number by two to find the diameter. Next, take this number and multiply ...more

How To : Convert fractions to decimals easily

This video teaches you how to convert fraction to decimals in three easy steps. The process of decimal to fraction conversion involves the use of the fundamental rule of fractions; the fraction should be written in its lowest terms. Write down the decimal divided by 1. Multip ...more

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