Hot Education Posts
How To: Solve word problems that involve rounding to estimate differences
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 unpack and solve problems that require you to estimate differences by rounding.
How To: Solve word problems involving the division of whole numbers
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 unpack and solve word problems that require you to divide whole numbers.
How To: Solve math problems involving the identity property of one
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 unpack and solve word problems requiring use of the identity property of 1.
How To: Solve math problems with the commutative law of addition
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 unpack and solve word problems requiring use of the commutative law of addition.
How To: Solve math problems with the commutative law of multiplication
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 unpack and solve word problems requiring use of the commutative law of addition.
How To: Solve math problems with the associative law of addition
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 unpack and solve word problems requiring use of the associative law of addition.
How To: Solve math problems with the associative law of multiplication
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 unpack and solve problems requiring use of the associate law of multiplication.
HowTo: Levitate Pencil Lead
The anonymous doctorate of science, Nurdrage, is back with another fascinating HowTo (previously featured, glow sticks). Dr. Lithium's latest video demonstrates how to practice diamagnetic levitation using common household pencil lead and magnets.
News: Krispy Kreme Mitosis
Take a lesson in mitosis (or cell division) with artist Kevin Van Aelst's Krispy Kreme explanatory photography series. Mmm... I think my stomach's growling.
News: In the Face of Nature, Art Doesn't Stand a Chance
Sometimes a human-made representation just can't beat the real deal. You may be convinced once you watch these science-art videos, a collaborative project titled Morphologics, by marine biologist Colin Foord and musician Jared McKay.
News: BAM! Sugar Is Not as Sweet as You May Think
You may think of sugar as purely a sweet ingredient meant for baking, but it can actually be a deadly explosive, according to PopSci's Gray Matter:
HowTo: Extract DNA From Anything Living
As long as you don't mind liquifying your subject in a blender, you can test DNA from virtually anything living with this guide from he Universe of Utah's Genetics Science Learning Center. Learn Genetics uses green split peas as a subject, and suggests fruits, meats and vegetables.
How To: Make a metal coin shake and shiver with dry ice
If you have some dry ice, try this cool science experiment out. It's so easy, you have to try it, at least once! You just need a chunk of dry ice and some metal coins, like a half dollar (which is comprised of copper and nickel).
News: Are Touchable Holograms the Future of the Adult Entertainment Industry?
We've seen extremely pricey, extremely artfully crafted sex dolls. Matt McMullen's dolls are so well crafted, in fact, that it is hard to imagine a superior alternative. Until now...
How To: Cite articles from online library databases in MLA
In this tutorial, we learn how to cite articles from online library databases in MLA. Make sure you have all the information available so you can include all of the information for the citation. The citation will be written in the following order: author, article title, publication title, volume and issue numbers, date of publication, and page numbers. Make sure you use only italics and do not underline. URLS are optional and depend on instructor preferences. Make sure you include the publica...
How To: Match exponential graphs
This video tutorial belongs to the Education category which is going to show you how to match exponential graphs. The video shows two graph sheets with three graphs marked A to F on each sheet and six equations. It starts off with matching the basic function, y = 2 to the power x. If you plug in zero for x, you get '2 to the power 0' which is 1. Hence, the equation becomes; y = 1. So, the graph that passes through y = 1 is the matching one. In the video it is graph A. You can watch the video ...
How To: Use commas with restrictive and nonrestrictive clauses
This video tutorial is in the Education category where you will learn how to use commas with restrictive and non-restrictive clauses. Restrictive and non-restrictive clauses are phrases or words that come between the subject and the verb. You don't use commas to separate restrictive clauses. For example, in the sentence "the students who did not wear uniforms were punished". Here "students" is the subject and "were punished" is the verb and the clause "who did not wear uniforms" is restrictiv...
How To: Accurately cite your sources
In this video tutorial, viewers learn how to cite sources. The citation style depends on the college major, professor or enrolled class. Citation gives credit to the author, validates claims that you have made, help readers learn about the subject and avoids plagiarism. To cite an article, users will need: the author, publication title, article title, date, volume/issue, page numbers and web address. To cite a book, users will need: the author, title, editor(s), chapter title, date of publica...
How To: Organize research materials for writing your research
Mary Silva teaches us how to organize and research materials for writing. First, copy and past all of your different references from the exact order that you wrote about them. A great way to help you organize all of these is to use notecards. If you don't want to do all that writing, then you can make your notecards on the computer! With this, you can make different notes on the bottom of the cards to help you remember things, as well as different citations. This is a great tool to help you o...
How To: Find the circumference of a circle
In this video tutorial, viewers learn how to find the circumference of a circle. This task is very easy, simple and fast to do. To find the circumference of a circle, multiple Pi with the diameter of the circle. The value of Pi is 3.14. The diameter is equal to 2 times the radius. Simply multiply the radius by 2 to find he diameter. The diameter is the straight horizontal line in the center of a circle. This video provides a demonstration for viewers to easily understand and follow along. Thi...
How To: Make a plastic like substance from vinegar and milk
In this video tutorial, viewers learn how to make a plastic substance. The materials required for this experiment are: 1 bowl of milk, 1 cup of vinegar, pot and mixing spoon. Begin by heating the milk in the pot and heat it at medium heat for several minutes. Then pour the milk into a separate bowl. Now add the vinegar into the milk and stir it. Continue stirring until it forms into a solid mixture. Then drain the liquid. This video will benefit those viewers who enjoy experimenting, and woul...
How To: Reduce and simplify fractions
In this tutorial, we learn how to reduce and simplify fractions. When you do this, you want to make sure you have taken common factors out of the top and bottom, then divide them out until the only common factor is the number one. You will keep going until you get to this point, or you can do another method by finding the greatest common factor. To understand this better, take the example of 24/64. The greatest common factor of these numbers is 8, because it divides evenly into both of them. ...
How To: Demonstrate the difference between land & sea ice
In this tutorial, we learn how to demonstrate the difference between land & sea ice. First, fill up two large aquariums with water, then add in a glacier to one aquarium and an iceberg in the other. This will see how the water level changes based on the melted of each different ice item. Draw a line at the water line where it started at, then when the ice melts, check the water levels. When finished, see what the water levels have ended up at. Now you will be able to show this to your student...
How To: Divide bigger numbers
In this video, we learn how to divide bigger numbers. As an example, let's say you were dividing 843 by 13. To make this easier, write down the times tables for 13 down and keep adding up. After you do this, see how many times 13 goes into 84. Your table will tell you how many times it goes into the larger number. Thirteen will go into 84 six times, so write six on the top line above the four, then subtract 78 from 84 and write a 6 next to the 4. Now, work out the remainder and when finished,...
How To: Find the area of a rectangle
In this tutorial, we learn how to find the area of a rectangle. First, you will need to know the formula, which is length times width. So, first find the length and width of the rectangle. After this, you will multiply the length and width together. Next, write down the units so you don't forget. When you are finished, you will know the area in just a few easy steps. This is a basic formula that is easy to understand and can be done quickly. When you are finished finding this, make sure you w...
News: The Scientific Formula for the Perfect Handshake
Scientists have recently released a mathematical breakdown of the perfect handshake. The University of Manchester researchers discovered that nearly one-in-five people hate the handshake, listing complaints such as sweaty palms, limp wrists, gripping too hard and no eye contact.
HowTo: DIY Glow Sticks
WonderHowTo favorite (and pal) NurdRage brings us another great science tutorial. Making glow sticks at home is not necessarily cheaper, but it's a great science project. Check out the video below to learn not only how to make the glow sticks, but also all about fluorescent dyes (and why Mountain Dew will not do the same thing). Previously, NurdRage Shatters Mysteriously Procured Human Heart.
News: Drop Dead Gorgeous Periodic Table
Utterly mind blowing CC-licensed photography of the periodic elements by Wikipedia user alchemist-hp. Beautiful examples below, click through for the whole project (in German).
News: Japanese Scientists Turn Dead Animals Into Art
In what appears to be some kind of hybrid science-art project, Japanese researchers have discovered a method for rendering a dead animal's body completely transparent, in order to dye the skeletal system. Simultaneously creepy and beautiful.
How To: Use radiation detection equipment
In this tutorial, we learn how to use radiation detection equipment. To use the dosimeter, you will remove the cap, then place the pipe on and push down on it. A light will come on, and you can use the knob to zero it. When you look in, you will be able to see it's measured in Roentgens per hour. When you are done using this, zero it again. Next, you will have a CD Geiger counter which has three positions for the knob. Whatever it is set on, you multiply the reading by that number. If you tur...
How To: Convert mixed numbers into top heavy fractions
In this video tutorial, viewers learn how to convert mixed numbers to top heavy fractions. This task is very easy, fast and simple. Begin by multiplying the whole number with the denominator and then add the numerator. In the final answer, the numerator will be greater than the denominator. The denominator stays the same and does not change. This video provides several examples and demonstrations for viewers to have a better understanding. This video will benefit those students who are strugg...
How To: Do quadratic equations
In order to work a quadratic equation, you should, first, try to simplify it. Try to move your variable to one side of the equation and the numerical values to the other. For example, in the equation 3n + 5n 2 = 0, you should try to move the 2 to the other side, by adding a positive two to both sides. Then, you should add together the like variables. This will give you 8n = 2. Then, you will need to divide both sides by 8. The answer will be n = 2/8. The quadratic formula is ax2 + bx + c = 0....
How To: Perform short division
In this Education video tutorial you will learn how to perform short division. The first example is a division by a single digit; 741 divided by 3. You write it as shown in the video and start dividing from the left digit. So, 7 divided by 3 will give 2 with 1 as remainder. Write this down as demonstrated in the video. 1 and 4 make 14 and dividing 14 by3 will give 4 and remainder is 2. Now dividing 2 and 1, that is 21 by 3 you get 7. The answer is 247. The next example is 847 divided by 5. 8 ...
How To: "Back out the tax" from a receipt
In this video, we learn how to back out the tax from a receipt. If you have a receipt where you see how much you paid and know the tax rate, except you want to figure out the cost of the item before the tax. First, take the cost of the item including tax and what the tax rate is. To figure out the original price, let x equal the cost of the item. Add the tax to the cost of the item which will equal the cost you paid. Perform the equation 1x+(tax rate)= (total price). After you figure this equ...
How To: Convert Farenheit to Celsius in your head
This video tutorial is in the Education category which will show you how to convert Fahrenheit to Celsius in your head. This method is a good estimate for converting temperatures. However, do not use this for accurate temperature conversions. Let's say you want to convert 22 degree Celsius to Fahrenheit. 1st step is to double the figure, that is, add 22 plus 22 which is 44. Next add 44 with 30, which gives the result 74. So, 22degree Celsius is equal to 74 degree Fahrenheit. Similarly, 32 deg...
How To: Divide fractions with examples
In this Education video tutorial you will learn how to divide fractions with examples. For example let us divide 1/5 with 3/4. This we can do by changing the division sign in to multiplication sign provided we swap the numerator and the denominator of the divisor to get its reciprocal. The equation can now be written as 1/5 x 4/3. Now multiplying the numerators and the denominators, we get the answer as 4/15. So, you can see that division of fractions is the same as multiplication. You only n...
How To: Write an introduction to your academic essay
In this tutorial, we learn how to write an introduction to your academic essay. The first part of your introduction should say why the topic is important. Using the phrase "is a topic of growing importance" is a great way to help boost your topic's importance. Next, you should have a sentence or two sentences talking about the difficulties of the topic and what issues are involved. The third part of your introduction should be a thesis statement that narrows down what the topic is going to be...
How To: Find the area of a square or rectangle in geometry
In this video tutorial, viewers learn how to find the area of a rectangle. The formula for finding the area of a rectangle is: A= b x h. The base is the horizontal bottom lie of the rectangle and the height is the vertical straight line of the rectangle. Whenever working with area, users must square the unit of measurement. To find the area of a square, multiple the side of the square twice (square it). This video will benefit those student viewers who are struggling with math, and are in nee...
How To: Create an erupting volcano
In this tutorial, we learn how to create an erupting volcano. First, take ammonium dichromate and pour it into a clear plastic dish. Next, grab a blow torch and blow it onto the material. This will make a substance that is black and looks like ash. This will get messy, so make sure you have a newspaper or cloth underneath the dish. Eventually, the material will catch on fire so you can remove the blow torch, then the ash will fall all around the volcano and the sparks will fly out of the midd...
How To: Make non-Newtonian slime mixing cornflour and water
In this tutorial, we learn how to make slime by mixing corn flour and water. To start, you will need corn flour, water, and two plastic containers. First, pour the corn flour into one plastic container and then add in some water with food coloring to the mix. After this, mix the combination together until it makes a paste. Add more water or corn flour as you mix. When finished, grasp the mix in your hands and it will start to turn into slime! You can color this with any color food coloring, b...