Education: Page 46

You can't add fractions when the denominators are not the same - it's a rule in math you can't ignore!

This video illustrates how to make napalm. You will need a petri dish, gasoline, and styrofoam to create napalm. Combining the styrofoam and gasoline in a petri dish you allow the styrofoam to dissolve and become a semi-solid substance. It will have the consistency of chewing gum and it will be highly flammable. This substance will be sticky and if lit it should be lit outside and at a distance from anyone as it will produce a gas that is toxic.

In a fraction where the bottom number, the denominator, is smaller than the top number, the numerator, it is called an improper fraction. Because it is improper, you'll want to fix it by turning it into a mixed number.

You should always try to reduce a fraction until it can't be reduced anymore. To do this, look at your fraction and figure out the greatest number BOTH the numerator and denominator can be divided by. This is called the GCF - the greatest common factor. In the video, the problem you must solve is (15/18). What number can be divided into both 15 and 18 evenly? The answer is 3.

Research questions are to be written with one of the four 'W' words which are who, what, when and where or any variation of the 'H' word- how. For example, how much, how so etc. Once a good research question is made, the question should tell the researcher what exactly it is that he/she is looking for.

The X-Ray Vision-aries Blog has compiled a list of YouTube's 100 Coolest Science Experiments. I particularly enjoy their introduction to the selection:

Take a tour of the ISS (International Space Station), just posted on YouTube this week. The ISS is an international project, including the five participant space stations: American National Aeronautics and Space Administration (NASA), the Russian Federal Space Agency (RKA), the Japan Aerospace Exploration Agency (JAXA), the Canadian Space Agency (CSA), and the European Space Agency (ESA).

Need a little help in your Statistics class? In this statistics tutorial hosted by The Free Math Tutor, a demonstration of how to use the Sharp EL531W calculator to find the correlation coefficient (r-value) and the equation of a regression line is given. Want some more practice? For exercises and answer sheets, go here.

Need a little help in your Trig class? In this two-part math tutorial, learn how to use the SOH (sine = opposite over hypotenuse) formula in high school Trigonometry. If you'd like to practice with exercises and answer sheets, you can go here.

Making a research paper is a lot of work. To keep a reference is not easy. Here is a good method:You will need:- Patience- 3" x 5" index cards- Patience- Writing Pen- Patience- References- Knowledge on citing references- Patience

An annotated bibliography is very important when writing a scholastic paper or essay. In this tutorial, learn how to create an annotated bibliography, step by step. Step 1:Cite your source, please format your source in APA, MLA, or Chicago style first.

In this eight-part video designed for teachers, learn how to evaluate a student's written IELTS (International English Language Testing System) essay. The IELTS is an international standardised test of English language proficiency. In these ight parts, learn how to view, analyze, and evaluate an IELTS essay.

Getting nervous about a timed essay coming up in school? In this six-part video of a writing class discussion, learn from Fullerton College professor Mark Fullmer some tips & tricks on how to write a "damn good" effective essay while being timed in class. Time management, essay structure, presentation, introductions, support, conclusions, vocabulary, and critical thinking are discussed over each of these six videos.

In this four part video tutorial series, learn how to write a 12 score essay for the SAT test in just ten days. The SAT essay is designed to measure your abilitity to develop a point of view on an issue presented in an excerpt, support your point of view using reasoning and examples from your reading, studies, experience, or observations, and your ability to follow the conventions of standard written English. Follow these steps presented in this video, and score at least a 10 on your SAT essay!

In this three-part instructional video hosted by English Ryan, learn how to write an effective thesis for an argument essay. In an argumentative essay, one not only relays information about the topic or position they are trying to argue, but also presents an argument with the PROS (supporting ideas) and CONS (opposing ideas) of the argumentative issue. One must clearly take a stand on either side of the issue and write as if persuading an opposing audience to adopt new beliefs or behavior. In...

16-year-old Alexander Kendrick has invented a low-frequency radio that allows for cave-texting, meaning deep underground cellular communication.

In this video, learn how to make your own homemade electroscope. An electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body and for static electricity experiments. They are easy to make. This electroscope is made from a binder clip and two sheets of plastic (or overhead transparency film), and scissors.

If you want to make some electrodes for electrochemistry, titanium strips are the way to go. It's rather interesting metal, and it's really hard, but can be cut with standard metalworking tools. Titanium filings are highly flammable, just like iron filings. But not everything is what it seems… this quick video on titanium and passivation electrochemistry tells why it makes it a bad anode if used without further treatment.

Curious about rockets? In this seven-part tutorial hosted by a science teacher, learn how to build your very own overhead water rocket launcher with simple tools you could find around town.

Think a hot air balloon is something you can only read about in books? Think again. In this six-part science based tutorial, learn how to make your very own hot air balloon using science & the following easy to find materials: plastic bags, plastic drinking straws, thin candles, aluminun foil, tape, and scissors.

In this two-part science tutorial, learn how to make a DIY reed instrument! By cutting the end of a drinking straw you can make a musical reed instrument that you can actually play a tune on. Within these videos, you will also gain some insite into the science of sound and music.

Need a little help in the fraction department? Don't sweat it. Luckily, there is this two-part math tutorial on the subject of dividing fractions to help you along the way. In part one, learn how to divide proper fractions an in part two, learn how to divide mixed numbers with whole numbers.

Did you sleep all semester in your Calculus class? Are you just waking up now to realize you have a test on Monday and that you're totally screwed? Well, luckily you can learn an entire semester worth of Calculus in just twenty minutes... or at leasts that's the hope.

Dropping out of high school doesn't have to mean the end of your educational career. You can earn a General Education Development diploma, also known as a GED. In this video, learn about the process needed, step-by-step, to get your GED.

Plagiarism in some schools and universities is major offense and can even get you kicked out of school all together. Plagiarism occurs when ideas or words that you advance as your own have actually been taken from other people. In this video, learn how to avoid plagiarism and make the words you write, your own.

Hmm... wondering what to do with a lazy Sunday afternoon? Why not build a volcano that can erupt? Have fun and make a mess, all in the name of science!

Not sure exactly how to calculate a twenty percent tip for your waitress? Or how about how to figure out how much less your cost will be with that thirty percent off tag? Use these steps to calculate percentage, without a calculator.

Remember the glowing pickle? Well, here's another sci-fi food-oddity. Sounds entirely fictitious, but apparently you can make edible lasers.

Has time travel always sparked your interest? Are you weirded out by wormholes? Flummoxed by your flux capacitor? Strap yourself in for this time-travel primer.

Learn how to find the slope of a line in this math tutorial. Whether you're doing your math homework or trying to figure out how steep a mountain is, the slope of a line is simple to calculate and has many practical uses.

Fractions can be tough, but in truth, they're one of the easiest concepts to understand in math. Figuring out fractions is the last thing you really have to worry about in math class, unless you have a horrible teacher, then you might want to check out this video tutorial to help you learn how to add fractions with unlike denominators, including how to find the LCD (lowest common denominator).

You already know how to make sulfuric acid with the metabisulfite and oxidizer method and you saw how to make copper sulfate from copper and sulfuric acid, so now try making sulfuric acid with these two in mind… with sulfuric acid by electrolysis of copper using an inert anode.

In this video tutorial, you'll learn how to create a very weird effect using a thin layer of fog made with warm water and dry ice. As the demonstrator moves his hands over the fog, he is able to scribble eerie lines through it. Even if you don't plan to try this yourself, the video is definitely worth a look.

The Winogradsky column, invented by Sergei Winogradsky, is a device for culturing a large diversity of microorganisms. Pond mud and water are mixed into a column using carbon sources like newspapers and sulfur sources like egg yolks. Left in the sun for a few months, the column becomes a colony rich with microorganisms, bacteria, cyanobacteria, and algae. In this video, scientist Karen Dodson shows you how to make your own.

In this tutorial by Shooting Eggs, you'll learn how to create your own "ocean in a bottle". The supplies are very simple and cheap, probably stuff you've already got around the house. But the finished effect is pretty impressive.

MAKE brings the do-it-yourself mindset to all the technology in your life. Make Magazine celebrates your right to tweak, hack, and bend any technology to your own will. In this tutorial, Robert Bruce Thompson shows you how to make crystal iodine. As Thompson says in the video, crystal iodine is currently a schedule one compound, and in order to buy you have to fill out a lot of paperwork and you'll end up on a DEA list. This tutorial gets you around that, but proceed carefully.

Any time is the right time for slime! In this video tutorial, you'll learn how to whip up a nauseating glop of green goo. It's actually a remarkably simple process, requiring just a few basic steps and materials you probably already have around the house. So get to work, and then get sliming!

How many times have you tried to set fire to candy canes, only to watch in sad frustration as they melt into sticky blobs. We've all been there, right?

Apparently a little amateur astronomy can go a long way. On March 21, 2009, Ralf Vandebergh, sitting in his backyard, pointed his 10 inch telescope at the sky and "saw a few bright pixels appear precisely where the work was going on at exactly the moment it was being conducted."  A few bright pixels = an astronaut!

This simple experiment will have you rubbing your eyes in disbelief. Make a glass bottle disappear with a lot of glycerin and another glass cup. The results are pretty astonishing. This is a fun experiment to try for yourself, or show off to other people.