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The golden ratio , g, is. The golden ratio is defined in many equivalent ways but the best known is: The ancient Greeks, being creepy numerologists with nothing better to do, were really excited about the golden rectangle and worked it into a lot of their art and architecture. Clearly, it’s the most perfect rectangle ever. Setting the ratios equal to each other you can solve for g approx. Or, to put it another way, it shows up by coincidence. You can see quickly that the string of numbers is 0, 1, 1, 2, 3, 5, 8, 13, 21, … It takes a bit of work, but after some math happens it turns out that round to the nearest integer. So what does the golden ratio have to do with the Fibonacci sequence? Not a damn thing, really. The equation that describes a circle is quadratic, and the equation that describes a straight line is linear.

## When It Comes To Romantic Attraction, Real Life Beats Questionnaires

Two 55 minute class periods would have been better. This year I knew I had to change that. I decided to start with a concept that worked wonders in my middle school math classes, Math Magic. I have them tell me their result, and then I tell them the number they chose by simply subtracting one from their result and dividing by 2. We talk about how they have to use a variable because everyone picked a different number.

After they attempt this and share it with their partner, we talk about any errors.

Amphetamine and methamphetamine are both pharmaceutical drugs used to treat a variety of conditions, along with recreational drugs, which are colloquially known as “speed.” Amphetamine was first synthesized in in Germany by Romanian chemist Lazăr Edeleanu who named it phenylisopropylamine. Around the same time, the Japanese organic chemist, Nagai Nagayoshi .

How many seconds are there in 2 hours? It can also be used quantitatively using units of measurement. Students need to learn both how to measure time and how to convert between units of time. We talk about hours before midday as being ante meridiem or am for short. We talk about hours after midday as being post meridiem or pm for short. Traditionally the time 12am means midnight and 12pm means midday although it is best to avoid confusion by using the words midday and midnight instead.

Dates We identify a day by giving its number, month and year. So the 8th of October would be or , although some people may write 8. In some countries, such as the USA, they write the month first followed by the day and then the year, writing 8th of October as To avoid confusion, many scientists, particularly astronomers, use a dating convention that starts with the largest unit and works towards the smallest; so they would write This notation is standard in China and is understood in all other countries.

In this form the notation can be extended to include hours, minutes and seconds in the 24 hour clock, so that 45 seconds past 3: The symbol T is used to indicate where the time measurement starts, in much the same way that we use a decimal point in Hindu-Arabic notation. The system can be extended to decimal fractions of a second for greater accuracy.

## MathsConf14

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Woolsthorpe, England, 25 December ; d. London, England, 20 March mathematics, dynamics, celestial mechanics , astronomy, optics, natural philosophy. Isaac Newton was born a posthumous child, his father having been buried the preceding 6 October. Newton was descended from yeomen on both sides: He was born prematurely, and there was considerable concern for his survival.

He later said that he could have fitted into a quart mug at birth. His early education was in the dame schools at Skillington and Stoke, beginning perhaps when he was five. He was, however, uninterested in farm chores, and absent-minded and lackadaisical. He was admitted a member of Trinity College, Cambridge, on 5 June as a subsizar, and became scholar in and Bachelor of Arts in

## History of mathematics

Babylonian mathematics refers to any mathematics of the peoples of Mesopotamia modern Iraq from the days of the early Sumerians through the Hellenistic period almost to the dawn of Christianity. The first few hundred years of the second millennium BC Old Babylonian period , and the last few centuries of the first millennium BC Seleucid period.

Later under the Arab Empire , Mesopotamia, especially Baghdad , once again became an important center of study for Islamic mathematics.

NEWTON, ISAAC (horpe, England, 25 December ; , England, 20 March ) mathematics, dynamics, celestial mechanics, astronomy, optics, natural.

We drove down the highway at full speed. He worked at full speed. Synonyms for speed See more synonyms for on Thesaurus. Speed, velocity, quickness, rapidity, celerity, haste refer to swift or energetic movement or operation. Speed originally prosperity or success may apply to human or nonhuman activity and emphasizes the rate in time at which something travels or operates: Velocity, a more learned or technical term, is sometimes interchangeable with speed: Quickness, a native word, and rapidity, a synonym of Latin origin, suggest speed of movement or operation on a small or subordinate scale; quickness applies more to people quickness of mind, of perception, of bodily movement , rapidity more to things, often in a technical or mechanical context: Celerity, a somewhat literary synonym of Latin origin, refers usually to human movement or operation and emphasizes expedition, dispatch, or economy in an activity: Haste refers to the energetic activity of human beings under stress; it often suggests lack of opportunity for care or thought:

## Department of Mathematics

By Carl Engelking January 29, 2: Shutterstock The Romantic Period of the early s was marked by a morbid fascination with mortality and death. Poets, novelists and other artists tackled the eternal void head on, rather than whisking such dark topics under the proverbial rug. With death in vogue, even mathematicians took a stab on the beauty of ceasing to be. In , British autodidact Benjamin Gompertz found the risk of death increases exponentially with age. After the age of 30, his depressing model shows , the risk of dying on any given day churns upward at a constant clip.

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August 29, The Ishango Bone: It is the oldest attestation of the practice of arithmetic in human history. The Ishango bones are actually two 2 bones of baboon, 10 to 14 cm long, with several incisions on each faces. The location of Ishango The left column can be divided in 4 groups, with each group possessing 19, 17, 13, and 11 notches.

The sum of these being Those are the 4 successive prime numbers between 10 and This constitutes a quad of prime numbers. The central column is divided in groups of 8. By an approximate count, one can find in the parenthesis, is the maximum number: The minimal sum is 48, while the maximal sum is The sum of these 4 numbers is However, we know that it is composed of 6 groups of 20, 6, 18, 6, 20, and 8 notches. The Ishango bones with their notches and the numbers The first bone has been subject to a lot of interpretation.

## Search Content

But the matches these algorithms offer may be no better than picking partners at random, a study finds. Researchers asked about heterosexual undergrads at Northwestern University to fill out questionnaires assessing their personalities and romantic preferences. They were quizzed about things like self-esteem, goals, values, loneliness, what they were looking for in a partner, and how assertive or patient or creative they want the partner to be — and how much those things apply to them, says Samantha Joel, a psychologist at the University of Utah and lead author on the study , which was published last week in Psychological Science.

The researchers then designed an algorithm to try to identify what personality traits or preferences led to the in-person attraction using part of the data from both the personality surveys and the speed dating. They also asked it to predict who in the group would be attracted to whom based solely on their questionnaire answers.

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Posted on January 4, by The Physicist The original question was: Are there a sequence of steps? If one starts with a mathematical model I can sort of see how using deduction, induction etc…. And what about the case where there is no mathematical model? The majority of the interesting stuff in the world involves stuff much more fancy. Otherwise you just create new maths. Then you make up symbols that allow you to write down those patterns. Then you see what the repercussions are.

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Differential geometry The German mathematician Carl Friedrich Gauss — , in connection with practical problems of surveying and geodesy, initiated the field of differential geometry. Using differential calculus , he characterized the intrinsic properties of curves and surfaces. For instance, he showed that the intrinsic curvature of a cylinder is the same as that of a plane, as can be seen by cutting a cylinder along its axis and flattening, but not the same as that of a sphere , which cannot be flattened without distortion.

Instead, they discovered that consistent non-Euclidean geometries exist. Topology Topology, the youngest and most sophisticated branch of geometry, focuses on the properties of geometric objects that remain unchanged upon continuous deformation—shrinking, stretching, and folding, but not tearing. The continuous development of topology dates from , when the Dutch mathematician L.

Epiphany: Speed Dating in Groups Posted on August 31, by Meg Craig • 8 comments So I really like using Kate’s Speed Dating as a review, but I always had problems: 1) setting up classroom 2) getting the rotation correct 3) having one kid that doesn’t understand the problem he has, EVEN THOUGH I TOLD YOU TO ASK ME BECAUSE YOU WERE ABOUT TO BECOME THE EXPERT.

By Ittay Weiss September 20, 2: Shutterstock A small dot on an old piece of birch bark marks one of the biggest events in the history of mathematics. The bark is actually part of an ancient Indian mathematical document known as the Bakhshali manuscript. And the dot is the first known recorded use of the number zero. In a positional number system, such as the decimal system we use now, the location of a digit is really important.

Indeed, the real difference between and 1, , is where the digit 1 is located, with the symbol 0 serving as a punctuation mark. Yet for thousands of years we did without it. The Sumerians of 5, BC employed a positional system but without a 0. In some rudimentary form , a symbol or a space was used to distinguish between, for example, and But that symbol was never used at the end of a number, so the difference between 5 and had to be determined by context.

The invention of zero immensely simplified computations, freeing mathematicians to develop vital mathematical disciplines such as algebra and calculus, and eventually the basis for computers. Western philosophy is plagued with grave misconceptions about nothingness and the mystical powers of language. The fifth century BC Greek thinker Parmenides proclaimed that nothing cannot exist, since to speak of something is to speak of something that exists.

This Parmenidean approach kept prominent historical figures busy for a long while.

## 3 Math Review Games to Get Students Moving

May 04, I previously did a speed dating activity with solving exponential and logarithmic equations. I really liked how students were teaching each other. So I decided to try it again with solving right triangle trig applications. For this activity, I didn’t have an application problem per person, instead per group. In groups of , students had to answer the card given to them.

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This can lead to confusion, as visual novels are considered a subgenre of adventure games and are not technically included in the dating sim genre. Often games where you prepare for a date, such as dress-up, is also included in this game genre. The technical definition of a dating simulation game, known as a romantic simulation game in Japan, can involve several technical game play elements such as a time limit, several statistics such as looks and charm which can be boosted through exercise, or an “attraction meter” which can increase or decrease depending on one’s decisions.

## Department of Mathematics

Time, Measurement of The history of time measurement is the story of the search for more consistent and accurate ways to measure time. Early human groups recorded the phases of the Moon some 30, years ago, but the first minutes were counted accurately only years ago. The atomic clocks that allowed mankind to track the approach of the third millennium in the year by a billionth of a second are less than 50 years old.

Thus, the practice and accuracy of time measurement has progressed greatly through humanity’s history. The study and science of time measurement is called horology.

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The Parallel Project offers free online maths worksheets each weekend, which are automatically marked and which are designed to stretch the most ambitious and able students. Parallel is freely available to all schools, just like his second project, Who Wants To Be A Mathematician, which is a maths competition aimed at 6th formers.

And the Top-Top Set Maths Project currently works with a dozen schools to subsidise an additional maths set beyond the normal top set , with the intention of consistently stretching the keenest maths students from Year 7 upwards. Extras Maths Cake Competition At each conference, we ask delegates to bring along their favourite resources, ideas, hints and tips.

Everyone has 90 seconds to tell a colleague about their idea, before swapping and hearing from them. There is usually time for five or six ‘dates’, so be ready to spread the word about what is making your classroom buzz right now. Feel free to bring handouts, weblinks, etc. TweetUp and do some maths! Lots of us help each other out on Twitter.