Problem: Article: To start learning algebra, you'll need to know basic math skills such as adding, subtracting, multiplying and dividing. This primary/elementary school math is essential before you start learning algebra. If you don't have these skills mastered, it will be tricky to tackle the more complex concepts taught in algebra. If you need a refresher on these operations, try our article on basic math skills. You don't necessarily need to be great at doing these basic operations in your head to do algebra problems. Many algebra classes will allow you to use a calculator to save time when doing these simple operations. You should, however, at least know how to do these operations without a calculator for when you aren't allowed to use one. One of the trickiest things about solving an algebra equation as a beginner is knowing where to start. Luckily, there's a specific order for solving these problems: first do any math operations in parentheses, then do exponents, then multiply, then divide, then add, and finally subtract. A handy tool for remembering this order of operations is the acronym PEMDAS.Learn how to apply the order of operations here. To recap, the order of operations is: Parentheses Exponents Multiplication Division Addition Subtraction The order of operations is important in algebra because doing the operations in an algebra problem in the wrong order can sometimes affect the answer. For instance, if we're dealing with the math problem 8 + 2 5, if we add 2 to 8 first, we get 10 5 = 50, but if we multiply 2 and 5 first, we get 8 + 10 = 18. Only the second answer is correct. In algebra, it's common to use negative numbers, so it's smart to review how to add, subtract, multiply, and divide negatives before starting to learn algebra. Below are just a few negative number basics to keep in mind for more information, see our articles on adding and subtracting negative numbers and dividing and multiplying negative numbers. On a number line, a negative version of a number is the same distance from zero as the positive, but in the opposite direction. Adding two negative numbers together makes the number more negative (in other words, the digits will be higher, but since the number is negative, it counts as being lower) Two negative signs cancel out subtracting a negative number is the same as adding a positive number Multiplying or dividing two negative numbers gives a positive answer. Multiplying or dividing a positive number and a negative number gives a negative answer. While simple algebra problems can be a snap to solve, more complicated problems can take many, many steps. To avoid errors, keep your work organized by starting a new line every time you make a step toward solving your problem. If you're dealing with a two-sided equation, try to write all the equals signs ("="s) underneath each other. This way, if you make a mistake somewhere, it'll be much easier to find and correct. For example, to solve the equation 9/3 - 5 + 3 4, we might keep our problem organized like this: 9/3 - 5 + 3 4 9/3 - 5 + 12 3 - 5 + 12 3 + 7 10
Summary: Review your basic math operations. Know the order of operations. Know how to use negative numbers. Know how to keep long problems organized.

INPUT ARTICLE: Article: The doctor should take no more than five minutes to get the eyelash out. Specifying beforehand what you need increases your chances of seeing a doctor that day. You can visit either an optometrist or an ophthalmologist. Optometrists primarily treat vision problems, but are equipped to handle some eye diseases and concerns as well. Ophthalmologists are medical doctors who treat a wide range of eye problems. The doctor will remove the eyelash quickly and safely, ensuring the eye doesn't get infected.

SUMMARY: Call the doctor's office beforehand and explain what you need. See an optometrist. See an ophthalmologist.

In one sentence, describe what the following article is about: A Perkins braillewriter is a device much like a standard typewriter, except for it has only six keys. Purchase heavy paper to feed into the top of the device. Braillewriters start at approximately $700 and come in a variety of shapes and sizes. Some are designed to be used with a single hand or only require a soft touch. There are also a variety of high tech braillewriters, to be discussed shortly. The large key in the center of the braillewriter is the space bar. Three keys to each side of the space bar represent the six dots alignments in braille. To type a cell, you will need to hold down the keys for all of the necessary dots at the same time. The slightly raised key to the far left is the line down key and the key parallel to it on the far right is the back space key. There will also be a large curved piece of plastic on the top of the machine that serves as a cartage return as well as grey nobs on the side that are used to roll the paper into the machine. In braille the dots are sometimes signified with numbers, where the upper left hand dot is 1, the middle left dot is 2 and the bottom left hand dot is 3. The right column similarly descends from 4-6. If we represent the dots this way, the braillewriter keyboard is arranged: 321 (space) 456. Typewriters, of course, are fairly cumbersome by modern standards. Luckily, there are now electric braillewriters that work on similar principles. Devices like the Mountbatten Brailler and the Perkins Smart Brailler allow you to store documents electronically. They also have audio support and training exercises. Recent Macintosh computers allow you to program a keyboard or even the touch screen of your iPad to serve as a braille typewriter. In this case keys on a typical QWERTY keyboard can be reprogrammed to have the same functions they would on a brailler.
Summary:
Get a braillewriter. Learn the keys. Go high tech.