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Fibonacci number

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Metallic numbers: Beyond the golden ratio

You've heard of the golden ratio but have you heard of the silver ratio? And all its other cousins called the metallic numbers? Read this article to meet the family!
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Fantastic Fibonacci

Bees do it, rabbits do it, and luckily, we humans can do it too: explore the famous Fibonacci sequence!
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Patterns and structures

Patterns and structures lie at the heart of mathematics, some even say they are mathematics. But how do they help us do mathematics?
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The life and numbers of Fibonacci

The Fibonacci sequence – 0, 1, 1, 2, 3, 5, 8, 13, ... – is one of the most famous pieces of mathematics. We see how these numbers appear in multiplying rabbits and bees, in the turns of sea shells and sunflower seeds, and how it all stemmed from a simple example in one of the most important books in Western mathematics.