The Top 6 Calculator Apps For the iPhone

!±8± The Top 6 Calculator Apps For the iPhone

Our recent article on the top 6 calculator apps for Android was a big hit, and since then we've been getting search inquiries about iOS. You asked for it, and we are delivering. We've searched out Apple's app store for our favorite 6 calculator apps for the iPhone and iPod touch. Since there was a wide disparity in cost of apps, we set the ground rule that we were searching for apps that cost less than . In fact, this list turned out to be our favorite 6 iPhone calculator apps for under .

#1 Graphing Calculator+ by xNeat.com

Graphing Calculator+ is our pick for the best all around iPhone calculator app. It greatest strength is that it does so many different things well. A switch button takes you easily between the calculators different modes. Those modes are graphing, scientific, handwriting, a polynomial calculator, and linear equations calculator. There's still room for improvement. In particular, we wish the scientific calculator had fractions, and that the grapher had trace. But the app is simple and powerful, and the fact that it automatically finds max, min, intercepts, and intersection points pretty much makes up for the lack of trace.

Pros: Handwriting support, graphing scientific, quadratic and cubic solver, systems of linear equations

Cons: Handwriting mode not always accurate, decimals only

Cost: .99

#2 Graphicus by Serafim Chekalkin

We are huge fans of Graphicus. If only every graphing calculator were this easy to use. No need to read the user manual here, just jump right in. Graphicus brings you almost all the information you could want about Cartesian, polar, and parametrics graphs in an incredibly elegant interface. Trace, extrema, inflection points, tangent lines are all readily available with a few taps of your finger. On the downside, there is no simple scientific calculator. It's also a minor bummer that there's no 3D in an app that's 100% focused on graphing, but there's only one app on this list that has 3D.

Pros: Offers everything graphical, intercepts, trace, inflection points, max/min, complete

Cons: Just a grapher

Cost: .99

#3 Symbolic Calculator by Janos Barkai

If you need a CAS for your iPhone, this is the app for you. For those who have used a TI-89, you'll feel right at home with with Symbolic Calculator. The focus of this app is it's computer algebra system, and the interface is pretty easy to use for those familiar with Texas Instrument's CAS calculators. If you're new to CAS's, just tap the question mark next to a given command, and an example will pop up demonstrating how to use the syntax appropriately. You can also use this app to graph, although it feels a little counter-intuitive until you get the hang of it, and the graphing features are simplistic compared to some of the other apps on this list.

Pros: For a CAS, simple to use, offers example input for each

Cons: Graphing could be nicer, mathprint only after inputting

Cost: $.99

#4 Graph It by Tezmo

Another excellent grapher is Graph It. This is also full featured grapher, which offers the ability to trace, find intercepts, and roots, as well as graph derivatives and integrals. It also offers a full scientific calculator with two-line display. The user interface is ok, but might take some getting used to for some users, particularly for the scientific calculator mode.

Pros: Full featured grapher, also a full scientific calculator

Cons: UI takes a little getting used to

Cost: $.99

#5 Quick graph by Columbiamug

For those in need of a 3D graphing app, Quick Graph is the way to go. There are other positives here too such as a strong user interface, simple to use polar coordinates,and a good 2D graphing interface. Screen caps are another built in feature. The real selling point, though, is the 3D, which is well rendered and even accepts cylindrical and spherical coordinates. It is possible to use this app as a scientific calculator, but the interface feels a little strange.

Pros: Polar and 3D, screen caps of graphs

Cons: No trace features, don't feel designed for non-graphing calculation

Cost: Free

#6 Powerone LE by Infinity Softworks

Not everyone is looking for a fancy grapher. For those looking for a more standard scientific calculator, Powerone LE fits the bill. It's got a very intuitive interface that you'll pick up right away. Powereone also features unit conversion and a currency converter that stays current to international currency exchange rates. Additionally, its got a simple statistics calculator that finds the mean of a series of numbers. It could be better if the scientific features used a two-line interface.

Pros: Easy to use, nice UI, currency/unit converter, stays current, simple statistical analysis

Cons: One line calculation, no graphing

Cost: Free with option to upgrade to more powerful version for .99

The Top 6 Calculator Apps For the iPhone

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HOW TO GET THE VIRTUAL TI CALCULATOR

!±8± HOW TO GET THE VIRTUAL TI CALCULATOR

IN THIS VIDEO I SHOW THE SIMPLE STEPS ON GETTING ANY TI CALCULATOR IN YOUR COMPUTER SO YOU DON'T HAVE TO BRING IT HOME EVERYDAY FOR HOMEWORK

HOW TO GET THE VIRTUAL TI CALCULATOR

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Free Math Help For Homework Problems is Available Online

!±8± Free Math Help For Homework Problems is Available Online

Many times when students are taking math, they get stuck on homework problems. Finding help is not always easy. When the math book doesn't seem clear in its explanations, one has to turn to other sources of information. There are many different sources available to help with math homework such as tutoring, web sites, teachers and others.

The homework problems in any math textbook are for the most part based on examples provided in the appropriate section. A math book will usually list a formula or equation that has to be understood. After the math formula is shown, an example of how to use it is usually provided. The example will present a problem that will need to be solved using the formula which was described prior to the example of how to use it.

Sometimes, there are math problems that the examples don't help with. At this point, either another math book with a related subject has to be acquired or another way of solving the problem has to be found. Many times when students take math they are left on their own to solve the problem. As a result, they have to rely on their textbook to help them out. If the book doesn't help another alternative would be to find a math tutor. The math tutor may have encountered this problem before and can show how to solve it. Math tutors can be found for many math subjects such as algebra, trigonometry, precalculus, calculus and statistics. They also range in different skill levels and prices. A tutor, however, can provide quick help to solving a homework problem.

For a more affordable option, the Internet can be a great resource to get help for homework problems. There are many web sites that focus on helping students get through math. Some of them have tools that can actually solve homework problems. Others list some of the rules of math such as formulas and definitions as well as procedures. These web sites can be used for reference. Also, some include actual homework problems that have been solved and can be used as examples in case the textbook comes up short.

In addition to getting help with tutoring or the Internet, there are other tools that can help with homework. Some of these include calculators that can actually solve certain types of problems. If the homework problem is an algebra problem, there are calculators that can find a solution graphically or analytically by manipulating the function. The TI 83 and 89 are calculators that can solve certain problems.

One important thing that should be kept in mind when taking math is that whatever current math is being taken, it depends to a large extent on prior math concepts. There are many mathematical theories that are built upon previous theories that must be understood. The best way to avoid future problems in math is to get as much out of it as possible. When time does not make this possible, help is still available through other sources.

Free Math Help For Homework Problems is Available Online

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The Practice of Statistics Third Edition Ti-83/84/89 Graphing Calculator Enhanced

!±8±The Practice of Statistics Third Edition Ti-83/84/89 Graphing Calculator Enhanced

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The History of Calculators

!±8± The History of Calculators

There was a time in history when simple arithmetic was compulsory in school. As technology emerged new discoveries quickly transformed the way we used traditional methods. One of these great inventions was the calculator. Modern calculators differ from old counting instruments. Numerical devices such as the abaci and comptometers were a manual process that was full of errors and quite tedious. Conversely modern calculators are digital or solar powered and don't require much manual labor. They are very inexpensive and come in many sizes and models. Listed below are seven lucky facts about calculators you should know:

In Education
1. There was plenty resistance to using calculators in school because it was thought that it would take away from their basic arithmetic skills.
2. Some scientific research indicates that insufficient guidance in the use of calculators can hold back mathematical thinking that pupils learn. On the flip side, others dispute that mathematical devices can cause fundamental mathematical skills to weaken or that such use can prevent learning of key mathematical concepts.

History: The Early Days
3. The first type of calculating instrument that was implanted was the Abacus. They were made out of a square shaped wooden piece with beads sliding up and down on wires. The Abacus is still used by merchants and fishermen in Africa and Asia.
4. The first recorded analog computer was in 150 BC. It was called the Antikythera mechanism and the astrolabe. These computation devices were made in Greece.

17th to 19th century
5. Wilhelm Schickard a German mathematician made the first digital calculator in 1623. He is dubbed the father of the computing era. His design used techniques that a clock used so addition devices were originally called computing clocks.
6. These gadgets were later improved upon by Charles Babbage (rhymes with cabbage) when he invented the mechanical calculator. It was called the difference engine because it could manipulate seven numbers of thirty-one.

Present
7. In the early eighties computing gadgets were a luxury item costing about two weeks pay. Prices dropped as cost of construction material for these devices became less expensive and accessible.
Today it is difficult for manufacturers to make a good profit of selling calculators solely. Consequently companies have competed to find unique strategies to sell computing devices. You can now purchase them as a dual items on mouse pads, pens, rulers and almost anything you can think of.

The History of Calculators

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Augmented Matrix to Solve Systems of Equations with TI-83

!±8± Augmented Matrix to Solve Systems of Equations with TI-83

Learn how to solve a system of equations in 60 seconds using a TI-83 graphing calculator with this short tutorial. I made this video for my Digital Storytelling class. I hope you enjoy it.

Augmented Matrix to Solve Systems of Equations with TI-83

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Texas Instruments TI-89 Titanium Graphing Calculator

!±8± Texas Instruments TI-89 Titanium Graphing Calculator

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The TI-89 Titanium lets you perform basic math, algebra, calculus, graphs, matrices, and statistical functions and creating animations, graphing 3-D rotations, and plotting contours. Graphing functions include basic function graphing, parametric graphing, polar graphing, sequence graphing, 3-D graphing, and differential-equation graphing. Additionally, the TI-89 Titanium includes symbolic manipulation, constants and measurement units, statistics and data plots, a numeric solver, a text editor, programming capabilities, tables, a split-screen function, variable management, and the ability to link to other calculators or a computer. The TI-89 Titanium's flash technology allows upgrading to future software versions without having to continually invest in new calculators. The 188 KB of RAM, combined with an impressive 2.7 MB of flash memory (three times the memory of the TI-89), are more than sufficient for stored functions, programs, and data, and add welcome speed to go with the TI's reliability. Create custom menus or use the default menu. Another feature is the Program Editor, which gives you the ability to write custom applications. The large LCD is adjustable to your environment and can be viewed clearly under a variety of lighting conditions. The calculator also comes with an input/output port and cable, letting to synch up with other TI-89s or TI-92s, as well as a USB port and cable. An attached, hard slide cover protects the calculator. The manual that ships with the TI-89 Titanium presents over 500 pages of clear, concise definitions, function explanations, examples, drawings, and appendices. It's divided into well-organized chapters that cover all the major features of the calculator.

• TI-89 Graphing Calculator For Dummies
• Calculus with the TI-89
• Advanced Algebra with the TI-89
• Statistics & Probability with the TI-89
• Algebra and Graphing: TI-89 Calculator Tutor: Vol 1

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Correlation on the Graphing Calculator

!±8± Correlation on the Graphing Calculator

Here's a tutorial to help you find the correlation coefficient on your graphing calculator. This is part 1 of 2. Part 2 will talk more about linear regression.

Correlation on the Graphing Calculator

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