STEM

How Heavy is Heavy

A stone is heavier than a feather and lighter than a rock. So is the stone heavy, or is it light? Can we know for sure how heavy (or light) a stone is? Find answers to these and other fascinating questions in this fun book about weight.

The Fascinating Fibonaccis

Almost a thousand years ago, an Indian scholar called Hemachandra discovered a fascinating number sequence. A century later, the same sequence caught the attention of Italian mathematician Fibonacci, who wrote about it. The Fibonacci sequence, as it began to be called, was straightforward enough – what made it fascinating was that this particular set of …

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