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# Posts

### May 27, 2015

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En mi opinión, uno de los motivos de la falta de interés por las matemáticas es que tienen la imagen de ser una ciencia inerte, sin nada por descubrir. Algo así como una lengua muerta. Por eso, con esta charla pretendo hacer llegar a todos los públicos el mensaje de que las matemáticas están muy vivas, mostrando tres problemas de investigación que cualquier niño puede entender. (Sigue leyendo...)
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When we measure things, most people are only worried about how accurate, or how close to the actual value, they are. Looking at the process of measurement more carefully, you will see that there is another important consideration: precision.
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Buenos días a todos! Os dejo con mi colaboración para esta edición del Carnaval de Matemáticas: http://elmundoderafalillo.blogspot.com.es/2015/05/respuestas-de-alumnos-matematicos-iii.html Espero que os guste ;)
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This page explains the application of right-angled trigonometry in forensic science to analysis bloodstains.

### May 26, 2015

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A collection of more than 600 non-routine mathematics problems known as Stella's Stunners. The problems range from simple visual problems, requiring no specific mathematical background, to problems that use the content of Pre-Algebra, Algebra I, Geometry, Algebra II and Trigonometry, up through Pre-Calculus.
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Problem-solving lessons that can be integrated in normal teaching programs. The problems cover a variety of levels and curriculum strands.
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updated proposition
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### May 25, 2015

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updated definition

### May 24, 2015

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updated definition

### May 23, 2015

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updated proposition
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### May 21, 2015

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At the beginning of last summer I wrote about a neat trick to make your summer a productive one. And I heard from some of you who took me up on this suggestion; it seems that this actually works for … Continue reading →
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During the Baroque period, a mathematical breakthrough inspired Johann Sebastian Bach, to write The Well-Tempered Clavier (1722), his book of preludes and fugues in all 24 major and minor keys. Bach was able to write in every key so successfully because mathematicians found better ways to calculate the 12th root of two.

### May 19, 2015

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...Sign up and never miss a Math Future event Email Address Sponsors {moebiusnoodles150.png} This site has moved! NaturalMath.com/MathFuture/ Presented by {Natural_Math_logo_100x100.png} {DZone209.jpg} Contact {MariaDroujkova_BW100x100.png} Dr. Maria Droujkova, founder maria@naturalmath.comDroujkova
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Ten remarkable mathematics students earned sixth place for Canada in the 27th Asian Pacific Mathematical Olympiad (APMO). Over 300 students from more than 30 countries wrote the four-hour APMO exam on March 9. “I am incredibly proud of our students,” said International Mathematical Olympiad (IMO) Chair Dorette Pronk. “Placing sixth overall is a huge accomplishment and these students have worked very hard to compete at this level.”

### May 18, 2015

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Buenas a todos! Acabo de publicar la entrada en la que se da a conocer al ganador de la Edición 6.3 Teorema de Pitágoras, así como los puntos recibidos por cada entrada: http://elmundoderafalillo.blogspot.com.es/2015/05/premio-carnamat63.html Saludos y enhorabuena al ganador ;)
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### May 17, 2015

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This applet is designed to allow you to interactively investigate the standard deviation as a measure of spread for a data set.

### May 16, 2015

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A GeoGebra worksheet to investigate/practise dividing an interval/segment into a given ratio.
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A GeoGebra worksheet for investigating the logarithmic function graph.

### May 15, 2015

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The graph shows the relationship between Exponential Function a^x and corresponding Logarithmic Function log_ax. A GeoGebra worksheet for students.
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Decimals and reading scales come together in this app as the player needs to mark where the given number appears on the number line.  Twenty correct answers in a row are needed to complete the challenge.