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Topic: Interesting
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Bablyonian use of square root of two
Photographs and analysis of an 1800 BC Babylonian table showing the diagonal of a square and ancient knowledge of the value of square root of two – expressed in base 60. A great extension resource. No previous knowledge of Babylonian required, but will make more sense if students know about different number base system. Full mathematical analysis on the site.
Epic pi quest sets 10 trillion digit record
From NewScientist:
A pair of pi enthusiasts have calculated the largest chunk of the mathematical constant yet, reaching just over 10 trillion digits.
SeeMath mathematics animations
Free, engaging, professional-quality animations of mathematical concepts that can help students to make deeper connections between areas of mathematics. Perfect for the interactive whiteboard (IWB) or data projector. You can link directly to any animation and new animations are added every few days.
The Search for a More Perfect Kilogram
The perfect kilogram is getting lighter. Can science find a better measure?
The world at seven billion
The world’s population is expected to hit seven billion in the next few weeks. After growing very slowly for most of human history, the number of people on Earth has more than doubled in the last 50 years. Where do you fit into this story of human life? Fill in your date of birth below to find out.