Need to know how to convert between moles and grams for chemistry class? It's easy! So easy, in fact, that this free video chemistry lesson can present a complete overview of the process in just over a minute's time. For more information, and to get started converting between moles and grams yourself, watch this helpful study guide.
Learn how to evaluate rational exponents using radical notation in this free video algebra lesson. 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).
Need to know how to convert between scientific and decimal notation? Learn how with this free video math lesson. 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).
Learn how to find the domain of 3 different rational expressions that have quadratic expressions in the denominator with this free video algebra lesson. 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).
Need a little bit of help figuring out how to solve word problems involving the perimeter of a rectangle? See how it's done with this free video math lesson. 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).
See how to find the formula for an arithmetical sequence in college-level algebra given two terms in this free video college-level algebra lesson. 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).
Interested in knowing how to find the ratio of a geometric series? See how it's done with this free geometer's guide. 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).
Need some help finding the sum of an infinite geometric series? See how it's done with this free geometer's guide. 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).
Looking for a primer on how to find determinants using a TI-83 graphing calculator? See how it's done with this free video math lesson. 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).
This video demonstrates that, unlike line integrals of scalar fields, line integrals over vector fields are path direction dependent. See how to solve vector-field integrals with this free video calculus lesson. 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).
Looking for a primer on how to solve matrix problems using a TI-83 graphing calculator? See how it's done with this free video algebra lesson. 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).
Need to know how to calculate the slope of a line? This free video algebra lesson will teach you everything you'll need to know. 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).
Compare fractions with inequalities! Watch this video lesson to see how. 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 free math tutorial, you'll learn how to evaluate fractions using inequalities.
Want to find the domain of a function without graphing it? 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 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).
Looking for a primer on how to find and sketch the domain of a function z = f(x, y) in calculus? Learn how with this free video calc lesson. 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).
Looking for a primer on how to work with BRIEF probability density functions and continuous random variables in calculus? Learn how with this free video calc lesson. 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).
Learn how to use eigenvectors and eigenspaces for a 3x3 matrix in linear 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 finish your homework or study for that next big test).
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 eigenvalues of 3x3 matrices in eigenvalues.
Calculate the angles formed between parallel lines and a transversal. This free video geometry lesson will show you how. 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).
Studies have shown that if you eat cereal regularly you will have a significant lower BMI (body mass index). You will want to eat whole grain cereals, but you will definitely want to watch out for the labels on which ones you buy to make sure you have the kind that will actually help you shed pounds.
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 write a formal analytical proof of the quadratic formula.
In this how to video, you will learn how to replace a broken iPhone screen. This screen is called a front panel. First, turn off the iPhone. Open the repair kit and look up the instructions. First, remove the screws at the bottom. Next, use a suction cup and pull the front assembly upwards to remove it. Do this carefully and then remove the connectors. Next, remove the screws on the metal plate assembly. Turn the display over and peel the black tape off. Next, insert the metal tool and put it...
Jessica Bard demonstrates how to make homemade caramel popcorn. To make the popcorn, heat some oil in a pan until it is nice and hot. Add the popcorn, put the lid on and keep shaking the pot as the popcorn pops. When the popping stops, pour it into a greased bowl.
In this video, a man answer questions sent in by viewers, about various plants. First he covers how to braid a ficus tree trunk. To do that you must grow the trees close together, then trim off the bottom limbs, and braid the trunks. Next he talks about growing miniature roses indoors. Miniature roses must be carefully watches for mold, insects, and over-exposure to sunlight when grown indoors. Then he answers a question about carnivorous plants. He covers the Venus fly trap, and demonstrates...
This video shows you an alternative procedure to bismuth subnitrate, using Pepto-Bismol tablets. You'll learn how to test for alkaloids, similar to a toxicology report. Put on your goggles, for this great home science experiment.
This video shows you how to light a bottle with long exposure in photography. The end result is to have a picture of a bottle with glowing edges with a black background. For starters you set your SLR camera settings to a 30 second manual shutter speed and a f5. 6 set aperture. Put the camera on a tripod for steadiness and set up your subject. For the subject, on a table, place your bottle in front of your chosen drop cloth. It is best to choose a color similar to the bottle. Then you use a li...
Whether you're at a bar or just with a group of friends, this is a great illusion that makes it look as though you are sending a large object right through a table!
Check out this DIY video tutorial from Curbly, the best place to share pictures of your home, find design ideas, and get expert home-improvement advice.
Check out this DIY video tutorial from Curbly, the best place to share pictures of your home, find design ideas, and get expert home-improvement advice.
In this ten-step video tutorial, you'll learn how to quickly copy keys using a camera, printer and Dremel tool. With this ten-step process you'll learn the necessary steps to copy almost any key... even if you only have access to it for a brief period of time.
Watch this science video tutorial from Nurd Rage on how to make silver different colors by electrochemical anodizing. Without using paint, you can give a silver surface various colors by anodizing it.
You’ve decided to protest an unjust political system or organization. Make the most impact with these tips. Protest with courage, communicate with exiles and know your rights. If you disagree with a political system, concentrate your beliefs and opinion. Study famous dissidents like Ghandi and Martin Luther King.
Studying to be a nurse? Then here is a nursing how-to video that teaches you how to collect and label a urine specimen. Every nurse should know the basics of this technique, follow along and see how easy it is to do a urine collection and label it properly. These medical tips are sure to help you pass your nursing exam with flying colors.
Stay tuned for this knitting instructional video on inserting a heel for a knitted sock. This is a very large scale knitted sock. It's going to be a felted Christmas stocking. The knitting is finished except for inserting the heel. The knitting technique demonstrated is exactly the same for a more normal, human-size knitted sock. It's also the same technique used to insert a pocket in a sweater.
Charles Sedlak helps you improve the sounds of your chords by studying the correct manner in which to position your fingers. Want to be a master guitar player? It all starts here.
Learn how to make a pen in which to easily conceal and retrieve test and exam answers by watching this how-to video. If you're too lazy to do your reading, or you don't think you have a prayer of passing, try a cheat sheet. Check out this video tutorial and learn how to hide answers or notes on a pen. Just remember, you're only cheating yourself by not studying.
James (The Amazing) Randi speaks on spoon/key bending and hidden picture reproduction. These were tricks pulled by Uri Geller to show he had psychic powers. Arthur C Clarke was one of many who spoke out against Geller and sought to distance the paranormal studies from Geller's bogus performances.
Bacteria, viruses and other germs sometimes set off the immune system to overreact, producing a severe condition called sepsis. Sepsis is so dangerous that it is the leading cause of death of children across the world, killing a million kids every year, mostly in developing countries. Probiotic bacteria might be able to prevent sepsis and infections, but no large research studies have been done to find out whether that actually works. Until now.
Staphylococcus aureus is a widespread bacteria — about a third of us have it on our body right now — usually in our nose or on our skin. And it probably isn't causing an infection. But, about 1% of people who have Staphylococcus aureus present have a type that is resistant to the antibiotic methicillin.
The next time you suffer a cut or abrasion, think twice before you reach for the Neosporin. It's time, and mom, tested — you get a cut, you wash it carefully, then apply some triple-threat antimicrobial ointment. You may or may not slap on a band-aid. We won't cover it here, but so that you know, covering the wound with a sterile dressing or band-aid is a good idea.
