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mathematical sciences posts

Chocolate choice brainteaser Brainteaser

by Fiona, 24 November 2022 | 0 comments

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Three new chocolate brands are being released: Jupiter, Astro, and Celeste. can you use up all the ingredients to make these bars?

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Alien academy brainteaser Brainteaser

by David, 9 November 2022 | 0 comments

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Difficulty: Tricky A new class of aliens is due to start at Alien Academy. The teachers need to know the age of each alien, but can’t contact them. Luckily, they have a few clues to help them. There are five aliens (Filp, Agg, Nim, Phod, and Mex) and each alien is a different age (7,…

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Who lives next door? A brainteaser Brainteaser

by David, 19 October 2022 | 1 comments

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Difficulty: Tricky There are 4 houses that stand in a row. One family lives in each house. The O’Connells live next door to the Taos, but they don’t live next door to the Sosas. The Prasads don’t live next door to the Sosas. Who lives next door to the Prasads?

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Growing dough brainteaser Brainteaser

by David, 6 October 2022 | 2 comments

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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, 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, 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, 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, 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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Sneaker discount brainteaser Brainteaser

by David, 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, 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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