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Topic: Mental calculator


In the News (Tue 21 May 13)

  
  Body Mass Index calculator you'll like
Calculate your Body Mass Index and compare yourself to friends with a similar age and height.
Try this Ideal Weight calculator, which adjusts for your age and current weight.
Because of these problems, this body mass index calculator shows extra statistics to help you be informed and judge your own body compared to others of the same height and age.
www.halls.md /body-mass-index/bmi.htm   (279 words)

  
 Encyclopedia :: encyclopedia : Calculator   (Site not responding. Last check: )
The type is considered distinct from both a calculating machine and a computer in that the calculator is a special-purpose device that may not qualify as a Turing machine.
The first mechanical calculators were mechanical desktop devices, which were soon replaced by electromechanical desktop calculators, and then by electronic devices using first thermionic valves, then transistors, then hard-wired integrated circuit logic.
Another kind of "drawback" resulting from the use, rather than the construction, of calculators, is the tendency of users to carelessly rely on the calculator's output without double-checking the magnitude (in practice, the placement of the decimal separator) of the result.
www.hallencyclopedia.com /Calculator   (1726 words)

  
 Mental arithmetic
Von Neumann's ability to do mental arithmetic is the source of a large number of stories which no doubt have grown the more impressive with the telling.
The most fascinating aspect of Aitken's ability to do mental calculation, to my [EFR] mind, is the way in which he was able to combine his calculating skill and extraordinary feats of memory with a deep understanding of the methods of numerical mathematics.
There are other possibilities: For example, the mental calculator is, or should be, very familiar with the factorisation of numbers; he should know not merely that 23 time 13 is 299, but that 23 times 87 is 2001.
www-gap.dcs.st-and.ac.uk /~history/HistTopics/Mental_arithmetic.html   (3194 words)

  
 Mathematician
Not only is calculation not a big part of some areas of mathematics research, but people who have had an important influence on mathematics do not necessarily have any extraordinary ability in adding or multiplying numbers.
For instance, Albert Einstein, whose ideas had a significant impact in geometry, had great difficulties with mathematics when he was a youth.
See mental calculators to read about prodigies performing impressive mental calculations.
www.brainyencyclopedia.com /encyclopedia/m/ma/mathematician.html   (1492 words)

  
 Mathematician - Facts, Information, and Encyclopedia Reference article   (Site not responding. Last check: )
On the other hand, there are also mental calculators -- prodigies at performing such calculations -- some of whom have moreover been great mathematicians.
Mathematicians are typically interested in finding and describing patterns that may have originally arisen from problems of calculation, but have now been abstracted to become problems of their own.
From much published research work of mathematicians, it may look as if the primary approach of a mathematician is to start with some given assumptions, often called axioms, and then proceed to prove other ideas (theorems) that follow from the assumptions according to exact rules of logic.
www.startsurfing.com /encyclopedia/m/a/t/Mathematician.html   (1325 words)

  
 Memory and Mental Calculation World Records
The calculator should perform the calculation in his/her head without the aid of any other person and without using a calculating machines, computers, etc. nor may the calculator write the numbers down.
The calculator must see all the numbers simultaneously - numbers may not appear one after another on a screen etc. for the calculator.
The numbers to be multiplied together should be randomly selected by computer immediately prior to the calculation and should be displayed to the calculator on a computer screen, board, screen or similar.
www.recordholders.org /en/list/memory.html   (1871 words)

  
 Advanced bmi calculator of Body Mass Index
This bmi calculator calculates body mass index from your Weight and Height and also shows how your weight compares to others of the same height and age.
That's why this bmi calculator also shows percentile statistics, so you can compare your weight to others of the same age and height.
According to a definition of obesity was issued by the National Heart, Lung, and Blood Institute, "overweight" is as a BMI calculator value between 25 and 29.9 and "obesity" is a BMI value greater than or equal to 30.
www.halls.md /body-mass-index/av.htm   (337 words)

  
 mental calculator | TutorGig.co.uk Encyclopedia   (Site not responding. Last check: )
In Dune, specially trained mental calculators known as Mentats have replaced mechanical computers completely.
DVD See all 521 results in mental calculator..
The Natural Calculator: Using the Natural Processes of the Mind for Me..
www.tutorgig.co.uk /ed/mental_calculator   (396 words)

  
 A Case Study of a Highly Skilled Mental Calculator.
This case study examined the performance of a 13-year-old highly skilled mental calculator on mental multiplication tasks.
She solved difficult tasks by using various ingenious calculation methods, including distributing, factoring, and recalling the product directly.
Proceedings of the Conference of the International Group for the Psychology of Mathematics Education (30th, Prague, Czech Republic, July 16-21, 2006).
www.eric.ed.gov /ERICWebPortal/recordDetail?accno=EJ361601   (158 words)

  
 mentalhealthchannel, Your Mental Health Community - mentalhealthchannel
Developed and monitored by board-certified physicians, mentalhealthchannel provides comprehensive, trustworthy information about mental health conditions, such as alcohol abuse, depression, and general anxiety disorder (GAD).
Use an interactive calculator to help assess risk factors for depression.
Complete practice website services - web design, patient education content, marketing, hosting, and maintenance - available from Healthcommunities.com, the home of mentalhealthchannel.
www.mentalhealthchannel.net   (164 words)

  
 Fertility Calculator and Ovulation Calculator
If you're not yet pregnant and you want to determine the length of your cycle, use the calendar to track your menstrual cycle.
If you know the length of your menstrual cycle, then you're ready to use our convenient Fertility Calculator to find out your next expected ovulation date and most fertile period.
Just fill out the form below, and click on "Calculate."
www.healthatoz.com /healthatoz/Atoz/tl/misc/duedate/entfert.jsp   (249 words)

  
 MENTALISM
COIN MAGIC * FIRE TRICKS * MAGIC DVD's * KID'S TRICKS * MAGICIAN'S SUPPLIES
If you wish to browse our entire Mentalism section by page click here.
BY THE HAND OF FU DIVIDE and CONQUER
www.daytonamagic.com /Main-Pages/mentalis.htm   (77 words)

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