The Interactive Lab Primer (ILP) has been developed as part of the Royal Society of Chemistry Teacher Fellowship Scheme, one of the themes of the Chemistry for Our Future program, and initiative which aims to secure a strong and sustainable future for the chemical sciences in ...more
I am writing this quick post in response to the recent earthquakes and tsunamis that are affecting Japan. As soon as the news broke, and we began to hear of tsunami warning for our area, I immediately realized how under prepared I was for a natural disaster. The thing that dro ...more
Choosing the right axe for you There are many choices and factors when it comes to buying a new electric guitar. Price, style, quality and comfort are major players. Many new guitarists start off with a box set, one that includes a guitar, amp and cable. These are good for t ...more
The importance of the brow has not been forgotten as much as it has been overlooked. A natural tool of communication, the brows can convey surprise, disdain, and sorrow with a lift, a furrow, or an expressive softness. The masters of makeup, like Max Factor and Ben Nye, knew t ...more
First off, don't be frustrated. YOU CAN DO IT! Contrary to the message in the image above, it's NOT over. It's just beginning. And when it comes to solving the New York Times crossword puzzle, the old cliche does apply: practice makes perfect. I've read quite a few books and ...more
If all things go well, you'll only have to take your road test once. That's the goal: to ace your test on the first try and then start driving on your own. Granted, it's a nerve-racking experience, but keep in mind that the California Department of Motor Vehicles wants you to ...more
If you've ever been asked to find the GCF, or Greatest Common Factor, of a series of numbers or algebraic expressions, check out this video to learn how. The methods for finding the greatest common factor for a series of numbers and for an algebraic expression are similar. S ...more
In this video the instructor shows how to factor the difference of squares using a formula. The formula to find the difference of squares can only be applied if you have two perfect squares. The formula is (a * a - b * b) = (a - b) * (a + b). That is the difference of squares ...more
In this video the instructor shows how to solve quadratic equations by factoring. You can solve a quadratic equation by factoring them. To do this first write the equation in the standard from which is a*x*x + b*x + c = 0. Now factor the equation into two smaller equations of ...more
Last time, we looked at archaic cryptography, so you should have a basic understanding of some of the concepts and terminology you'll need. Now, we'll discuss one of the most important advances in computer security in the 20th century—public key cryptography. What Is Public K ...more
When you see a problem involving a fraction, don't freak out. Dividing fractions is actually fairly easy once you learn the simple formula of how to do it. Math can be scary, but don't give up. Follow these simple steps, and soon you'll be dividing fractions like a pro. Step ...more
In this video, the instructor shows how to factor trinomials. An equation is a trinomial if it has three terms. If you factor a trinomial, you are left with two binomials which are the factors of the original trinomial. Multiplying them would result in the original trinomial. ...more
In this video the instructor shows how to factor a general quadratic polynomial. Here the first step is to identify the coefficient of the squared term. Write the reciprocal of the numerical coefficient of the squared term out side and write two separate parenthesis which are ...more
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
This video will show you how to carry out multiplication of fractions using cancellation, which will make your fraction multiplication problems simpler to solve. You will need to look at the numerator of the first fraction and the denominator of the second fraction and see if ...more
This video shows a tutorial of adding fractions. The first example shows a fraction that has like denominators so all you had to do is add the denominators. In the second example it shows two fractions that do not have like denominators. Therefore, you need to find the greates ...more
This video is about using the grouping factoring method. We're using a four term polynomial. There is a even number of terms. We can break them into two groups of 2. The first group of "2" the common factor is "a." The last group, the common factor is "-2b". The reason we use ...more
In this video, we learn how to subtract rational expressions. To start, you will need to find common denominators. To do this, factor out the denominators in the fractions on both sides of the equations. Now you need to build the lowest common denominator for these two fractio ...more
A video that demonstrates one of the basic techniques involved in factorizing an equation that contains the difference of two terms which are also perfect squares themselves and are equated to 0. The solution to such type of problems is easy and simply involves factorizing on ...more
In order to simplify complex variables, you must first consider the numerical values separate from the variable. In the case of 24x/48x, you would look at the numbers alone to see if they have any factors. These numbers have the number 6 in common. So, divide it by 6. This wil ...more
In this video, Coach Jay demonstrates the pedestal routine, which utilizes aspects of yoga and Pilates. There are three factors which should be taken into account before starting: first, you should maintain your breathing throughout. Next, make sure to engage the muscles aroun ...more
Chrysanthemums are a beautiful flower to have in your garden for color and for picking to take into the house. There are two very important factors with planting mums. One is that you must have the right kind of chrysanthemum and two you must plant it at the proper time. There ...more
In this video the instructor shows how to factor a polynomial. A polynomial having three terms is called as trinomial. Now if you factor it you will obtain two binomials whose product will be the original polynomial. Before factoring a polynomial you need to find out if the po ...more
In this video, the instructor shows how to multiply and divide rational expressions. To solve a rational expression that contains many terms, solve step by step by following the order of operations. Order of operations advises one to work the parenthesis part first; so solve t ...more
In this video the instructor teaches about equivalent fractions. When given a problem to determine if two fractions are equivalent fractions the first thing to do is write them in the lowest terms. A fraction is said to be in the lowest terms if the greatest common divisor of ...more
In this video the instructor shows how to divide rational expressions. To divide rational expressions follow this simple four step approach. In the fist step change the division to multiplication by flipping the second fraction. Now the original division simplifies to multipli ...more
This video demonstrates the simplest method for multiplying fractions. According to the tutor, one should first identify the highest common factor with which to reduce the two fractions, by themselves, and in relation to each other. The numerators of the two fractions are mult ...more
This a simple video illustrating the process of addition involving fractions which have common denominators. The method is really quite easy and straightforward, as demonstrated by this video. One has to simply take the denominator of the sum as the same which is the common de ...more
For more advanced math, you will need to use the difference of squares in order to factor certain polynomials. This video offers the basic technique for this factoring method as well as a few examples to get you started. In order for this factoring technique to work, you will ...more
Looking for a guide on how to find the greatest common factor or GCF of any given two numbers? Look no further. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the I ...more
Live in the future (à la Star Trek, circa 1966) with uiproductions' pneumatic air-powered sliding door: "I always wanted a piece of Star Trek and the Disney Monorail in my house, and one thing they have in common is that they both have automatic sliding doors. It would be the ...more
Math is one of those subjects in school where you either love it or hate it or just don't get it. But math is nothing to fear, because it's a part of our everyday lives, and ifs something everyone should know the basics of. Don’t let math intimidate you. Whether you’re multipl ...more
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
robichaudd teaches you how to simplify square roots. When you're dealing with variables, even powers and you want to find out the square root of it, you follow the process. Divide the power by the root, which is two, because it's a square root, that gives you what comes out. I ...more
In this Rhino 3D / Grasshopper software tutorial we expand on a previous video from the site, Rhino - Patterning Based on Point Distance with Grasshopper. The idea is to use 2 points rather than one. The logic is borrowed from Andy Payne on a 3ds Max model with wire parameters ...more
If traditional supine bridges become too easy, you can try to progress to the one leg version. This exercise is going to work your glutes like none other. Your hamstrings and lower back are also heavily engaged during this exercise. The single leg bridge requires an advanced l ...more
A square root of a number is a value which when multiplied to it self gives you the original number. The square roots of perfect squares are whole numbers. Like square root of 9 is 3, because 3 times 3 is 9. Similarly square root of 81 is 9 because 9 times 9 is 81. Others numb ...more
In the video, the process of factoring trinomials is described. A trinomial that cannot be easily factored in its original form is shown. It is simplified by pulling out the greatest common factor. After that, a trinomial that is easier to factor is shown. Next, the simplified ...more
What's the Difference Between Ales and Lagers People often ask me, "Nick, what is the difference between Ales and Lagers?" Well, as you may or may not know, there are two types of beers -Ales & Lagers. All beers are made from the basic combination of water, hops, malts, and y ...more
Need help figuring out how to find the greatest common factor and/or the least common multiple of two given numbers? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have b ...more
So, you've started playing golf, and you've started getting competitive... Figure out a golf handicap with help from this free video from expert golf site, Golf Link. A golfer's handicap is determined by two factors, which are the course rating and the slope of the golf course ...more
Taking this formula 9x²+y²=9 your instructor shows you how to find the solution for the variable y. Finding a second derivative is no more difficult that finding the first derivative, you only have to do the problem equation through twice. The derivative of 9x² will be 18, of ...more
Sure, they have personal trainers and chefs to help them shed their postpartum pounds. But here are a few of their other secret weapons. Step 1 Keep hard-boiled eggs in your fridge and eat just the white part whenever you’re hungry. This strategy helped Heidi Klum appear on t ...more
Help yourself win that must-have item with these tips. You Will Need: a computer with internet access, money, & patience. Create an account. Browse the categories to familiarize yourself with the site, especially if you don’t have a specific item in mind. If you know what you ...more
Indian snacks are awesome, but when we look into the health factor, they go from 30 to 0 in 2 seconds flat. Poha chivda is a wonderful healthy snack alternative to the fried ones, you so yearn for at the stores. This poha chivda recipe has a great shelf life and is so easy to ...more
If you’re unfamiliar with League of Legends, you’re either not into PC gaming or you haven’t spent much time on the internet. Riot Games officially released League almost two years ago, and since then it’s become a huge hit. In fact, the Santa Monica based company recently ann ...more
World of Warcraft has been on top of the world for seven years. No other MMO has come close to challenging its dominance of the genre, and it has generated billions of dollars for Blizzard. They have spent a lot of money adding more and more content, to the extent where the fu ...more
Video game makers have never had great name recognition amongst the American public. Shigeru Miyamoto, Cliff Bleszinski, and Will Wright are names most Americans can't be bothered to remember, whatever their contribution to games have been. Most people are familiar with their ...more
INTRODUCTION In this Digital world now almost every one knows the a, b , c of computer. From a child of 5th grade to an old man, everyone knows how to operate computer and do simple work on it. Thats why you need to have something which makes you different from others. How q ...more
To simplify a complex fraction, turn it into one fraction on the top divided into a fraction on the bottom. Once this is complete, you will turn the division into the two into a multiple by the reciprocal, factor, and then cancel. To make a division, find the lowest common den ...more
Torus knots are beautiful knots formed by wrapping a line around a torus and tying the ends together to form a loop. The resulting knot has a star-like appearance when viewed from above. The 36 examples with the least number of crossings can be seen at the Knot Atlas's page on ...more
Computer Science Professor Francesco De Comité has a fantastic gallery of mathematical images on Flickr. As part of this collection, he has a few hundred images of real or rendered polyhedra made out of paper or playing cards which he calls "slide togethers." These are constru ...more
Earlier last month, I wrote on how to subscribe to Google+ users using PlusFeed. I used it, and then I realized that I wasn't getting my own feed anymore. I discovered that the free service had been disabled due to cost issues, as detailed by the creator +Russell Beattie. The ...more
More than often, lawyer commercials tend to be the butt of many jokes. Fact is many lawyer commercials are just plain awful. Is it because the style is heavily commercialized? Is it because the end product is what the client wants? Or is it a combination of two factors-- the c ...more
Starting off on Your Journey So, you've decided to learn a language, eh? First off, let me congratulate you. Why? Well, language learning is looked upon by many people as a complicated and difficult task. Unfortunately, this outlook deters many people from even thinking about ...more
How to be a better guitarist Have you ever just wanted to pick up that old guitar that is just laying around? Or found yourself bursting with creative ideas but don't know how to express them with a guitar? I want to show you my way on becoming the best guitarist you can be, ...more
Factor a trinomial by grouping In order to factor a trinomial by grouping you must have four terms. In order to have four terms, we are going to break the middle term, 15, into two pieces that can work with the first term, 4x2 and the last term, 9. We multiply 4 x 9 which equ ...more
In this tutorial, we learn how to add rational expressions. When you have two rational expressions, you will first need to factor every denominator. After this, find the lowest common denominator from all of them. After this, rewrite every fraction so it has the lowest common ...more
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
In arithmetic, the simplest expression is far preferred to the long eye-boggling one. Stop making your expressions painful optical illusions by watching this tutorial on how to write rational expressions in the lowest terms. By factoring and then canceling out like expression ...more