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Maths posts

Growing dough brainteaser Brainteaser

by David Shaw, 6 October 2022 | 2 comments

Brain icon

Difficulty: Extreme! Nguyệt keeps a bread dough in her fridge. She tends to it so that every day it doubles in size, and then every morning, she cuts off enough dough to make one loaf of bread for her breakfast.

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My favourite book brainteaser Brainteaser

by David Shaw, 23 September 2022 | 0 comments

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Difficulty: Fun On my bookshelf, my favourite book is the third from the left, and it’s the seventh from the right. How many books are there on that shelf?

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Curved origami sculpture Activity

by David Shaw, 7 September 2022 | 0 comments

A curvy, ridged shape a bit like a potato chip

Folding origami cranes and paper aeroplanes is fun, but they tend to be made of straight lines. So what happens when you fold in curves?

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Straight curves Activity

by David Shaw, 31 August 2022 | 0 comments

Skewers are straight and pretty tough. But put just the right twist on them, and you can make something surprisingly curvy!

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When clock hands meet brainteaser Brainteaser

by David Shaw, 24 August 2022 | 2 comments

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For an entire day, Ruth watched a dial clock, looking for when the hands met. She wrote down all the times they met. Which hour did the hands not meet?

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Your number is up! A quick quiz Quiz

by David Shaw, 12 August 2022 | 3 comments

This quiz is for all you maths wizards. Can you maximise your score, or does this quiz have your number?

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Sneaker discount brainteaser Brainteaser

by David Shaw, 11 August 2022 | 0 comments

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Billie is really in to sneakers and is aiming to sell them for a profit. Work out if Billie made money, lost money, or sold the sneakers at their original price.

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Two candles brainteaser Brainteaser

by David Shaw, 27 July 2022 | 3 comments

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Barry has 2 candles that are both 60 centimetres long. One will last for 1 hour, and the other will last for 2 hours.

Barry lights both candles at the same time. Later, he blows them out at the same time.

The next day, Barry realises that one of the candles is half the length of the other.

Assuming they both burnt evenly, how long were they burning for?

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A maths prize for packing balls News

by David Shaw, 21 July 2022 | 2 comments

Box bursting open with green balls spilling out.

Have you ever struggled to pack balls back into your toy box? The Fields Medal, one of the most famous prizes in mathematics, was recently announced. One of this year’s winners, Ukrainian mathematician Maryna Viazovska, is an expert in packing balls in boxes. But there’s a catch! Her findings work in 8 dimensions (D) and beyond.

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Try a tangram Activity

by David Shaw, 20 July 2022 | 0 comments

a duck shape made of smaller shapes

This traditional Chinese puzzle, known as a tangram, reveals some surprising properties of squares!

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