Hot Education How-Tos
How To: Make a Crazy Zigzagging Stream of Water Using a Speaker
Sound waves are a lot more versatile than you'd think. For starters, you can use them to project images onto a bubble and liquefy gummy bears. And now, YouTube scientist and optical illusionist extraordinaire Brusspup shows how sound waves can also be used to manipulate a stream of water into a zigzag shape.
How To: Spend Money on a Graphing Calculator? Nah—Just Use This Web-Based TI Emulator
For the majority of my math classes in middle and high school, a graphing calculator was a must. While the calculators were very useful to have, they were quite steep in the price column. After losing the TI-83 graphing calculator my parents bought me in high school, I had to save up my own money to buy the next one.
How To: Make a Globe-Shaped Candle Lantern from Ice
If you've ever lived in an area that gets ridiculously cold during the winter, you know that it's not so much like this... But usually a little more like this. So...cold...
How To: Make Glowing Slime
Learn how to make your own slime with ingredients you can find around the house. It can even glow under a blacklight!
How To: Debone a Chicken in 5 Minutes.
Deboning a chicken can be intimidating if you don't know how to start. In this video, I'll show you how to debone a chicken in 5 minutes.
How To: Make Water Droplets "Levitate" on Water (Using Vibrations)
You can take some really awesome photos of water droplets if you've got a fast enough camera (and flash), but water drops aren't just spectacular as photographic subjects—you can also make them a part of the photographic process by using a water drop as a DIY projection microscope and even a macro lens for your iPhone. But as useful as a water drop can be, it's still way cooler when they're in front of the camera (as the subject). Recently, researchers from the National Autonomous University ...
How To: Smelt Your Loose Change into Well-Fitting Penny Rings
Did you know that the average cost to make a penny is about 2.4 cents?!? That's why the Obama administration asked Congress earlier this year for permission to change the metals in the penny, hoping to get the cost back down where it makes sense.
How To: Make Trippy Triboluminescent Crystals That Glow Red or Blue When You Smash Them
If you're a Breaking Bad junkie who can't wait for the next episode, satisfy your craving with a little at-home chemistry and make some blue DIY smash-glow crystals! No, this is not Walter White's so-called "Big Sky" or even the subpar cringe-worthy product of his competitors. It's not even the same kind of crystals, otherwise you wouldn't be reading this. This is totally legal, even kid-friendly if you play it safe, though it actually requires more safety precautions than the potassium nitra...
How To: Discover the Hidden Colors in Everyday Objects with This DIY Video Spectrometer
A spectrometer is a device that splits light into all of the different colors it's composed of that can't be seen with the naked eye. It does this by using a prism to refract or bend the light. Jeffrey Warren over at Public Labs created a tutorial showing how you can make your own video spectrometer and create spectra like the one pictured below. Any guesses as to what the subject is? Believe it or not, that's what whipped cream looks like when viewed through a spectrometer. You can do this w...
How To: Improve Water Head
An experiment was carried out at our laborataries to investigate the flow through two pipes of same diameter fitted at the same height from water level inside of a water tank as shown. It is found the longer pipe line inside the water tank generates a higher speed resulting more powerfull flow. Flow in this pressure pipe develops due to gravitational accelaration on a horizontally flowing water column also, when it is an enclosed stream of flow. If this length is short it is not possible to d...
How To: Multiply Any Number by 11 with a Super Fast Mental Trick
Most of the time, when I’m bored during math class, I play with my calculator to satisfy my boredom. Recently, I've discovered that when multiplying any number by 11, 111, or any number similar to it, that it has a pattern (though I guess everything in math has a pattern). I don't know if this technique is original, because I didn't read anything about this. It's just mere observation. If it’s a tried and true technique, let me know.
How To: Calculate Consumer Surplus with a few simple equations
Struggling to find and calculate the correct consumer surplus for an econ class or in any other situation? Take a look at this guide that will walk you through the different equations and graphs necesssary to understand and calculate consumer surplus.
How To: Launch a Cork Rocket with an Ultraviolet LED Flashlight
Science is most marvelous when it's creating an explosion, even at the tiniest of proportions. In the video below, Daniel Rosenberg from Harvard's Natural Science Lecture Demonstration Services reveals the secret to shooting a cork rocket over twenty meters using a little chemistry and an ultraviolet LED light. Rosenberg, who's a research assistant and lecturer for the Natural Science division at Harvard, demonstrates what happens when hydrogen and chlorine are explosively "burned" together t...
How To: Use PEMDAS to evaluate an algebraic expression
Algebra is not as hard as it looks. Learn how to evaluate expressions correctly by using the order of operations, which can easily be remembered as PEMDAS- Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. You can solve any problem in algebra with this approach.
Printable Tactile Astronomy: How to "See" Outer Space if You're Blind
Have you ever felt the desire to reach out and touch a galaxy? Or "feel" those stunning nebulas and planets you see in Hubble photos? As alluring as it sounds, it's safe to say the odds of your whim coming true are nonexistent. You'd have to travel about 6 earth years and spend millions of dollars building your own personal spacecraft to get close enough to actually wave your hand through one of Saturn's rings. But in an attempt to help the blind "see" what they're missing, some semblance of ...
How To: How Round Is Your Circle? Engineering Puzzles Explained
Can you dissect an equilateral triangle into pieces that can be rearranged into a square? If you think you can, you may have mastered the Pythagorean theorem.
How To: Study
Learning Style What kind of learner are you? There are three different ways people learn:
How To: Make flowers glow in the dark with a fluorescent highlighter
Are you looking for some fun party decorations, or a neat gift idea? You can make beautiful glow in the dark flowers, using nothing more than a standard fluorescent highlighter and ultra violet light. After you watch this video, you will be able to amaze your friends by making flowers glow in the dark!
How To: Write a Book Query Letter for a Literary Agent
A book query letter must be well written and brief. Heading
How To: Play Music With Your Mind
Tired of getting calluses from incessantly strumming along to 'No Woman No Cry'? Just hook up to the brain-music system and use your brain power to play a tune instead. I'm not talking—humming along in your head. The machine, created by composer and computer-music specialist Eduardo Miranda of the University of Plymouth, UK, is composed of electrodes taped directly onto your skull that pick up tiny electrical impulses from neurons in your brain and translates them into musical rhythms on a co...
How To: Get Rid of All that Space Junk
How about a laser? One that is strong enough to nudge debris out of earth orbit. That's what NASA contractor James Mason wants to do, and his lab simulations suggest that the idea is possible. Mason wants to use a 5kW ground-based laser and a ground-based 1.5 meter telescope to spot potentially hazardous space waste and shove it off, by about 200 meters per day of lasering. It's kind-of like air traffic control for near earth orbit.
How To: How Much Would It Cost to Discover Every Animal on Earth?
Are you prone to crusades of the overambitious? Well, here's one for you: try to find and identify every animal on earth. You may think scientists have a handle on this, having pinned down 1.4 million animal species so far, but there are millions more are out there, waiting to be found. Brazilian scientists have put the cost of finding the rest at a decisive $263 billion.
How To: Control a Movie Plot with Your Emotions
Not in the mood for a sappy ending? Well, strap in because "Emotional Response Cinema Technology" lets your own body physiology control the movie music, the special effects, and even the movie ending. A collaboration between BioControl Systems, Filmtrip, and the Sonic Arts Research Center at Queen's University Belfast, the technology was recently showcased at the SXSW film festival in Austin, TX, where the newly minted horror film Unsound interacted with the audience through wires connected t...
How To: Prevent Post-Earthquake Nuclear Meltdown in the US
After getting slammed with a crazy-big earthquake/tsunami, the Japanese nuclear plant Fukushima Daiichi might be on the brink of meltdown. Not as bad as Chernobyl, but maybe as bad as Three Mile Island. Nobody wishes such a disaster on anyone...anywhere in the world. In the US, there are about 100 nuclear facilities, about 8 of which are located near hot beds of seismic activity.
How To: Make Handwriting Fun
Letter formation can be fun! Few children enjoy traditional handwriting practice. Copying the same black letters over and over again with a pencil is boring! Here is how you can make letter formation fun while practicing with your child at home.
How To: Volunteer in Your Community
So you want to be more involved in your community. That's great! It does not have to be super complicated to start being involved. Here are a few easy ways to go about doing so:
How To: Tie off a suspension ring for rope bondage
If you're planning on doing some bondage knots, you better learn how to do it right. This video shows you how to properly tie off a titanium suspension ring for use in your bondage activities. This video is clear and straight forward, using a large piece of rope, making it easy to see exactly how it's done. Remember to be careful with your S&M knots, especially if you're suspending someone's weight.
How To: Make fun green slime with borax and Elmer's Glue
The only thing slimier than Charlie Sheen's latest sex scandal is this super sticky and icky green slime, made with borax and some Elmer's Glue. Gain the sticky molasses of experience by checking out this science tutorial on how to whip up a batch of green goo.
How To: Make simple dark green slime without borax
Most folks mistakingly think that slime - or green silly putty - simply can't be whipped up without borax. But the buffer solution can easily be replaced by another ingredient that you already have lying around in your house: laundry detergent.
How To: Make Gooey Green Slime Using Elmer's Glue and Borax
Remember the movie "Flubber," about mad professor Robin Williams and his gravity-defying invention of slime that could walk, talk, and transform into just about anything? Well, you can make a very similar type of green goo at home using stuff you already have lying around.
How To: Choose a Speech or Writing Topic
Whether you're a student, a toastmaster, just writing, or making articles on WonderHowTo, you will have to come up with a topic. The topic should be able to guide you to some of the things you want people to know about. Here are some ways that you can can come up with a topic.
How To: Make a gooey slime at home using corn flour
Gross out your friends, or just have fun playing with some goo! You can make your own slime at home easily. All you need is some corn flour and water. Add food coloring if you really want to make it cool!
How To: Make slime without using borax
This video shows you how to make slime, or goo, without using borax which can be harsh on some people's skin. Rather than spending money on buying slime for your children in the toy store, simply mix water and cornstarch. You can even make it any color you want just by adding food coloring. Make slime without using borax.
How To: Use a laser to ignite a fire within a regular balloon
All you need is a burning laser, a bit of flash paper (which you can find at any magician's shop), some thread, a balloon pump, and of course, a balloon. Then set it all up to set a fire inside the balloon!
How To: Make a set of two sided lapbooks out of manila file folders
This tutorial shows you an easy and fun way to make two sided lapbooks. These tools are ideal for things like language lessons, where you can show different vocabulary words on either side of the book. All you need are some manila file folders and bright colors.
How To: Finish the CNA Skills Test within the Allotted Time
CNA skills may vary from state to state. Depending on your state of residence, the skills section of the CNA certification exam will consist of three to five randomly chosen skills.
How To: Make a water drop electrostatic generator
Wanna make some lighting in your very own home? You can with this cool how-to video. Basically what you'll be creating is called a Kelvin's Thunderstorm, or, a water drop electrostatic generator. Check out the video to see what supplies you'll need to make this experiement work.
How To: Perform a cool trick with Ivory soap and a microwave
Ever wonder what happens when you put a bar of Ivory soap (the soap that floats!) in a microwave for a few minutes? This science experiment shows what happens when water molecules in a bar of Ivory get nuked! Try it!
How To: Create a color explosion with this cool science experiement
Soap is an incredible thing and this how-to shows some of its incredible qualities. You'll need a plate, some whole mile, some food coloring, some Q-tips and some dish detergent. It's an explosion of color! Some very unusual things happen when you mix a little milk, food coloring, and a drop of liquid soap. Use the experiment to amaze your friends and uncover the scientific secrets of soap.
How To: Perform an ice-cube trick with sodium chloride
Think you can lift an ice-cube with nothing but a piece of string? In this cool how-to science lesson, Steve Spangler shows us how to do it, and explains what happens when salt is put on ice. We all know that salt is used to melt ice and snow, but do you know why? Leave it Steve Spangler to turn this basic science lesson into an after-dinner trick you'll use to amaze your friends.