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# Author Archives: Sarah Spoenemann

## How do I Solve this Equation? Look at the Symmetries! – The Idea behind Galois Theory

Originating author is Timo Leuders. Introduction There are some questions that accompany the development of mathematics through cultures and ages. One of these questions is how to find an unknown quantity of which one knows some relations such as – … Continue reading

## Mathematical Impressions

June’s Site of the Month is: Mathematical Impressions A series of video presentations of mathematical phenomena, and discussion of their properties. These videos by geometer George Hart are part of the Simons Foundation scientific outreach. George Hart’s work can be … Continue reading

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## On-Line Encyclopaedia of Integer Sequences

May’s Site of the Month is the On-Line Encyclopaedia of Integer Sequences. The wiki-page is available in over 50 languages. This site of over a quarter of a million sequences allows you to enter the first integers of any sequence … Continue reading

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## Metamagical Themas

May’s Book of the Month is Metamagical Themas by Douglas Hofstadter. First published in 1985 by Basic Books, available in hardback and paperback. Also available in French under the title Ma Thémagie (InterEditions, 1988). Our second ever Book of the … Continue reading

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## TEDEd Lessons Worth Sharing

April’s Site of the Month is: TEDEd Lessons Worth Sharing TEDEd Lessons are short (~4mins) video clips, and the ones on mathematics include several riddles, plus unusual uses of mathematics. There are also some conventional clips such as “The Secrets … Continue reading

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## How To Lie With Statistics

April’s Book of the Month is How To Lie With Statistics by Darrell Huff. Norton reissued this 1954 book in 1993, and this edition is available on Kindle. There is a 1991 Penguin edition and it has been translated into … Continue reading

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## The Exact Sciences in Antiquity

March’s Book of the Month is: The Exact Sciences in Antiquity by Otto Neugebauer. Second edition published in 1957 by Brown University Press, now republished by Dover in 1969. Commentary adapted from the Amazon website, see this link for further … Continue reading

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## CultureMATH

March’s Site of the Month is: CultureMATH CultureMATH is a French language website dedicated to secondary mathematics teacher education. Published articles present mathematical ideas at several levels. The topics are often related to the curriculum, to present them more deeply. … Continue reading

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## Mathematical Etudes

February’s Site of the Month: Mathematical Etudes This is a Russian site, but has an English and a French version, use “en” or “fr” at the end of the URL. The site contains several 3D animated films that illustrate theorems … Continue reading

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## The Story of a Number

February’s Book of the Month is: The Story of a Number by Eli Manor. First published in 1993 and available in paperback in the Princeton Science Library. From the “Goodreads” website. See here for more details. “…. Geared to the … Continue reading

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