!±8±TEXTI89TITANIUM - TI-89 Titanium Programmable Graphing Calculator
Brand : Texas InstrumentsRate :
Price : $138.99
Post Date : Dec 01, 2011 01:02:35
Usually ships in 1-2 business days
TI-89 Titanium Programmable Graphing Calculator
Wednesday, November 30, 2011
TEXTI89TITANIUM - TI-89 Titanium Programmable Graphing Calculator
Rate :
Price : $138.99
Post Date : Dec 01, 2011 01:02:35
Usually ships in 1-2 business days
Sunday, November 27, 2011
Thursday, November 24, 2011
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.
Tuesday, November 22, 2011
TI-89 amateur - Astrosmash - Texas Instruments TI-89 Grpahing Calculator Games
Get this and other TI-89 games at calculatorti.com Play games TI-89 games on a TI graphing calculator. Free calculator downloads. Astrosmash Link www.calculatorti.com
Friday, November 18, 2011
College Students - Why a Good Graphing Calculator?
The benefits of Graphing calculators
Graphing Calculators have assisted professional engineers and scientists since their invention. By the mid 80's calculators had replaced abacuses in the pockets of professionals, offering transportable and easy computation and manipulation of data.
Many students don't realize how beneficial a calculator is in math courses. Graphing calculators are recommended for math courses from pre-algebra onward, and college programs involving physics, calculus or statistics often require a graphing calculator. Successful high schools are offering class sets or requiring students to purchase a good quality calculator, so that students can familiarize themselves with the tool. Students can use the easy computation and manipulation of a quality calculator during their Sat, Act, or AP placement tests to enhance their calculus abilities.
Graphing calculators are similar to a laptop computer in many aspects, but are much lighter and less expensive. Calculators with graphing capapbility hold many types of data in the on board memory, including gathered statistics, games, notes, and mathematical functions. Manufacturers offer free software that can be used on the calculators they produce, from games programs to advanced tools that enhance calculus abilities. Calculators are equipped with a larger screen than a standard calculator that users to see a visual representation of the work, and they display charts and graphs of data that users can easily manipulate. Calculator data can be saved to other graphing calculators or input in computer programs. Calculators perform complex mathematical functions that standard laptops don't without additional software.
Good calculators are an invaluable tool for today's students because they offer easy computation and manipulation of data, a significantly wider range of functions than standard calculators, and are less expensive than a laptop. Users can define their own formulas and inputs that enhance the calculator with increased calculus abilities, making them a necessary tool for college-bound students.
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