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How To: Parametrize a surface with two parameters

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to parameterize a surface with two parameters.

How To: Find the position of a vector-valued function

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 Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to determine the position vector-valued function for parameterization.

How To: Do a jumping flame science experiment

This nifty little science experiment is sure to be one that will not only educate, but entertain as well. This tutorial shows you how to do a jumping flame experiment using nothing more than a candle, a flame, and some smoke to help the flame travel. It's perfect for those young and old and is easy to perform. Enjoy!

How To: Make a paper cup

If you're finding yourself without dishes due to the fact that you're packing or unpacking, getting a quick drink can be a pain. So instead of rummaging through all those boxes try this quick nifty tutorial. This video shows you how to make a paper cup using just a couple sheets of regular paper. It's so easy and efficient you'll be sipping water in no time. Enjoy!

How To: Calculate the United States unemployment rate

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the US unemployment rate given the raw data.

How To: Solve radical equations with extraneous solutions

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with radical equations containing invalid or "extraneous" solutions.

How To: Graph data by hand with a stem-and-leaf plot

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 Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to visualize statistical data with a hand-drawn stem-and-leaf chart.

How To: Set up domain email with GoDaddy

Want to set up a custom email account for a domain hosted by GoDaddy? It's simple. So simple, in fact, that this free video guide can present a complete overview of the email address creation process in just over three and a half minutes' time. For complete instructions, and to start using your own custom email addresses, watch this helpful how-to.

How To: Close a hole in a crochet circle

Want to know how to close a hole in a crochet circle? It's simple. So simple, in fact, that a complete and thorough overview of the process can be presented in just over a minute's time. Seal holes in crochet circles with this free video crocheting lesson from the crochet experts at CraftMastery.

How To: Simplify rational radicals

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this free math lesson, you'll learn how to simplify rational radical expressions.

How To: Change the Google logo

The Google logo is more than an image at the top of the website, it's a full blown brand. You can boost yourself to that status (at least on your own computer) by changing the logo to your name or anything else you want it to say. This video will show you the different ways you can change the Google logo.

How To: Read into mixed signals from a guy

Flirting can be a scary, confusing world if you're not prepared. Everybody has their own way of communicating their feelings and more often than not, it's not all black and white. Being able to read into those shades of gray can make it much easier to tell when you're being flirted with and when he's so done with you. This video will show you to read mixed signals from a guy.

How To: Transfer music from your iPod to iTunes

It's unfortunate, but the fact of the matter is computers crash and you can lose a lot of important files when this happens. Your music doesn't have to be part of that. If something goes wrong with your iTunes, you can take the music on your iPod and transfer it to another iTunes. This video will show you how.

How To: Cook chicken breast with parma ham and mozzarella

Simon Blunt is here with a recipe for stuffed chicken breast that is sure to fill you up and leave you satisfied! The process is easy and the results are fantastic. It's basically as simple as getting the ham and cheese into the chicken breast and then letting the magic happen. This video will show you how to cook chicken breast with parma ham and mozzerella.

How To: Add texture in Photoshop using layer styles

Want to add some grit to your pristine digital photos? It's easy. In this free Photoshop lesson from Nicole Young, you'll learn how to add dirt and grain to your images by using layer styles in Adobe Photoshop CS4 or CS5. For more information, including step-by-step instructions, watch this graphic designer's guide.

How To: Hold her hand

Every guy's there... You're taking a stroll with a girl you like and you want to grab her hand, but find your own claming up and getting sweaty! Yes, it's a bit nerve racking doing it for the first time: hand holding that is. Luckily, your Wing Girls are here to help! Get tips on how to get to the hand holding stage with the advice of these two young dating & relationship gurus.

How To: Plant garlic in containers instead of the ground

Whether you lack the space in your home garden or simply want to exercise greater control over your plant's interactions with the surrounding environment, container gardening is a great way to go. And it's also easy to do. With this home gardening how-to from Growing Wisdom, you'll learn how to plant and grow garlic in your own container box.

How To: Change Windows settings in Windows 7

Now that you've installed Microsoft Windows 7 on your computer or bought a new Windows PC, it's time that you made yourself at home. With this official Windows 7 video tutorial from the folks at Microsoft, you'll learn how to apply custom settings as well as how to keep your Windows 7 PC running smoothly.

How To: Use differentiation equations to solve for position

This video teaches how to use calculus find the position, velocity and acceleration of an object. Imagine an object moving on a straight line. It's position at any time (t) is given as s(t) pronounced "s of t". It's velocity is v(t)= s'(t) which is the derivative of s(t). It's acceleration a(t) is the derivative of its velocity v'(t). If we look at it from a different perspective we are differentiating. The derivative of the position is its velocity, the derivative of its velocity is it accel...

How To: Find the graph of a square root function

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to sketch the graph a square root function.

How To: Make calculations with the Pythagorean theorem

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve problems with the Pythagorean theorem in geometry.

How To: Chart data with a box and whisker plot

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free statistics tutorials, you'll learn how to use visualize data by graphing it in a box-and-whisker diagram.

How To: Measure dispersion with range, variance & std dev

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to use statistical range, variance and standard deviation to measure dispersion in a data set.

How To: Solve rational equations in algebra

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve an equation in which to rational expressions are said to equal each other.

How To: Simplify rational expressions in algebra

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 Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this two-part installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to simplify rational expressions in algebra.

How To: Find the asymptote of a rational function in algebra

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 Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the asymptote of a rational function in college-level algebra.

How To: Prevent a banana from ripening too quickly

This video gives tips on how to keep a banana from ripening too quickly. Bananas are popular because they're inexpensive, they're tasty and they are relatively easy to get locally. The banana in the demonstration has a few brown spots but is reasonably fresh. A fresh banana will still be sweet. If a banana ripens too quickly it gives a fermented taste. Then you have to throw it away, which is like throwing money away. How do you keep a banana from ripening too quickly? Put it in the fridge. D...

How To: Care for your cast iron pan

This video shows how to care for your cast iron pan. The guy explaining made some chicken the night before and was to tired to clean the pan. He says never to use soap on cast iron. Run some hot water over the debris that was left in the pan. He uses a scrub brush to get into the edges. Take some salt and pour it on, it's alright to put a lot on. Rub the salt around and rinse it out. Use a towel and wipe it dry. Then put it on the stove with medium high heat for five minutes. Every so often i...

How To: Discuss future plans in Spanish

This lively video explains how to discuss future plans in Spanish. Professor Jason explains that it's not that difficult for English people learning Spanish as the same construction is used for 'going to'. There is also a separate future tense, using one set of endings that you simply add to the infinitive, but adding a stress on the final syllable, except for the first person plural. Of course, it's not quite so simple with irregular verbs, which have a special stem which has to be learned b...

How To: Get cheap origami paper alternatives

This is demo showing where to get a cheap origami paper. Origami papers are expensive in terms of shaping. It's very cute and nice. While seeing the holographic picture of the paper we may clarify that. Take a big roll and it is cheap. Take off the protective sheets on the walls. Its cheap and its like 3 -4 $ per piece. Its pretty and wonderful. Also we may get wrapping paper which you can buy. This is cheaper and you can get it home. This is a great paper and you may can fold everything. Whe...

How To: Tune a nitro engine

Tuning a nitro engine can be dangerous work if you don't the necessary precautions. The first and most important precaution is to educate yourself. You want to make sure that the engine doesn't heat up or cool down too much, you want it at it's normal operating temperature. Follow the detailed instructions in this video too see the rest. This video will show the proper, safe way to tune your nitro engine.