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Amicable Numbers There are a few pair of numbers that have a very peculiar affinity for each other and are so-called "amicable numbers.

It turns out that all the factors ofthat is those less than itself, add up to And, surprisingly, the factors of add up to I only know of three other pairs like these: Can you find others? Incredible Human Calculators Oh you might know of someone who can do two- or even three-place multiplication problems in their head, and there are those who can add faster than you can using an electronic calculator, but do you know the stories of Zerah Colburn and Truman Henry Safford?

Zerah Colburn was born inthe son of a Vermont farmer. By the age of eight, he was giving mathematical exhibitions in England where he was asked by a member of the audience to compute 8 to the 16th power.

He gave the correct answer ,, in about thirty seconds, and brought the astounded audience to tears. Zerah eventually stayed in England, received his formal education there, but strangely his incredible calculating abilities waned as he aged.

He died inat the age of just 36, after a life of teaching Greek, Latin, French, Spanish and English in the United States, but not before writing his autobiography in which he outlined his calculating methods.

Another calculating prodigy, Truman Henry Safford, was born incoincidentally in Vermont. When he was ten, he was given a problem in church by the Reverend H.

Multiply in your head ,,, by itself! According to the good reverend's own account, Truman "flew around the room like a top, pulling his pantaloons over the tops of his boots, biting his hands, rolling his eyes in their sockets, sometimes smiling and talking, and then seeming to be in agony.

The boy admitted he was exhausted after this calculation. He never did any public exhibitions, went to college, studied astronomy, and like Zerah Colburn, lost much of his amazing abilities as he aged.

He died in A nice list and description of other mathematical child prodigies can be found HERE. Interesting and Little-Known Algebra and Geometry Facts Here are a few helpful and neat little facts that evade most students and teachers of algebra and geometry: Hobson The Magic Tetrahedron many thanks to R.

Leo Gillis Here's a neat trick involving all the numbers from 1 to 26, and three of the five Platonic Solids, the most basic polyhedral shapes. Let's start with the tetrahedron.

A tetrahedron, sometimes called a triangular pyramid, is a shape made up of four corners, four equilateral triangular faces, and six edges. Since each face is a triangle, it also has a total of 12 angles on its four faces. These components can be numbered from 1 to 26 in a special way.

The basis of the trick is to use three pairs of numbers in order to create a value for every part of the tetrahedron. The three pairs are:schwenkreis.com Lesson 2 3 Advance Preparation Prepare a large class Facts Table like the one on journal page 27, using one of the following options: draw the.

Your Ultimate MLA Format Guide & Generator What is MLA? MLA stands for the Modern Language Association, which is an organization that focuses on language and literature..

Depending on which subject area your class or research focuses on, your professor . How to Write an Essay. In this Article: Article Summary Writing Your Essay Revising Your Essay Writing a Persuasive Essay Writing an Expository Essay Write a Narrative Essay Essay Help Community Q&A Throughout your academic career, you will often be asked to write essays.

You may have to work on an assigned essay for class, enter an essay contest or write essays for college admissions. Double Facts are additions in which a number is added to itself.

For example, 1 + 1, 2 + 2 etc. Internalizing double facts are helpful building blocks in developing fluency in adding single digit numbers. Edit Article How to Write a Thesis Statement. In this Article: Article Summary Crafting Great Thesis Statements Getting it Right Finding the Perfect Thesis Community Q&A Whether youâ€™re writing a short essay or a doctoral dissertation, your thesis statement can .

When Prophecy Fails [Leon Festinger, Henry Riecken, Stanley Schachter] on schwenkreis.com *FREE* shipping on qualifying offers. reprint of First edition.

When Prophecy Fails [] is a classic text in social psychology authored by Leon Festinger.

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Doubles fact you can use to find the sum 2+3= - Doubles fa | StudySoup