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Blog Support for Growing Mathematicians

Posts tagged with TED Talks

Mathematics of Conflict

August31

In a recent issue of Nature was a paper by Juan Camilo Bohorquez, Sean Gourley, Alexander R. Dixon, Michael Spagat and Neil F. Johnson, which argued that all insurgencies–wars in which guerrilla-type units are fighting a standing military–share a single, predictable pattern in their violent attacks. In other words, according to their model, the decisions […]

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Radio Host to present at TED for Year of Mathematics

February3

RADIO host Adam Spencer will California for the annual TED conference at the end of next month. (article source here) Spencer, who runs ABC’s popular Sydney radio breakfast show, wowed selectors last year with a six minute audition based on his life long calling to study mathematics.┬áThe key to successful TED talks is being as […]

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Tiles and Tessellation Art Exhibition

January30

The art of fitting together mathematical shapes in repeating patterns is the basis of many fine designs and art work (unlike this one): In 2012 there was an excellent exhibition of mathematical art works. Click on this image below (“hyperbolic tiling”) to find out about these wonderful works and their author-artists: (Footnote: the first pic […]

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Maths needs a makeover!

November19

Dan Meyer gives Maths Teaching (and learning) a new perspective at TED Talks. Today’s math curriculum is teaching students to expect (and excel at) a paint-by-numbers (formulae and fun- flavoured) classwork, robbing students of a skill more important than solving problems: formulating them. In his talk, Dan Meyer shows classroom-tested math exercises that prompt students […]

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Its a Wonderful World

November13

Check out this amazing TED talk which investigates the mathematics of scale and the beauty of the nano world:

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Statistics – a Photographic View by Chris Jordan (11min video from TED)

February6
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Post Support

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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