Sonnia Elisabeth Olesen
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51 followers
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this is a regular tetrahedron constructed from 4 congruent convex parts; the axis of rotation passes through the middle-points of two opposite edges of the tetrahedron (each part consists of 1 (green) + 1 (orange) + 3 (blue, pink & yellow) isosceles trapezoids plus a square, as faces); 4 yellow, 2 blue & 2 pink trapezoids plus the 4 squares are glued together (out) inside the tetrahedron..﻿
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How do you cut three disks from a given triangle such that their total area is maximized? The first solution proposed in history was the “obvious” solution with three mutually tangent circles (on the left). It appeared, however, that if you choose the incircle and the two biggest circles in the remaining places (on the right), the area is slightly bigger. The methods come closest to each other, to within 1%, in the case of an equilateral triangle.
Source: http://curiosamathematica.tumblr.com/﻿
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Denne høsten begynner 60.000 nye forventningsfulle 6-åringer på skolen. De er vant til å bruke digitale verktøy for å utforske, underholde og lære. Vil skolen opprettholde læringslysten og nysgjerrigheten hos disse barna?﻿
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Bra skrevet om digital kompetanse﻿
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Dyktige ledere bygger relasjoner:﻿
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Chocolate bar trick! :-)﻿
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Hi, my name is Sonnia Olesen and I work with education management in Norway, at this school: http://xn--vgen-qoa.vgs.no/

Now I'm running i prodject for 150 of our employies, we all have our own iPad. I woud like to share experiences with other schools who are into iPads.﻿
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