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Maths posts

Coded message brainteaser Brainteaser

by David, 21 March 2018 | 4 comments

Brain icon

You’ve just received a secret coded message: AD, BA, BH, CE, DB, DI, EF You know it follows a pattern, but can you work out what pair of letters come next?

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On Earth and Mars, time and travel – a quick quiz Quiz

by David, 14 March 2018 | 0 comments

Black lightning bolt in purple circle

Put your thinking caps on, it’s time to test your skills in chemistry, time, space, tech and biology!

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1936 brainteaser Brainteaser

by David, 7 March 2018 | 2 comments

Brain icon

1936 is a square number. That means you can make it by multiplying a whole number by itself: 1936 = 44 x 44

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Catching a colossal prime News

by David, 1 March 2018 | 0 comments

Picture of numbers arranged in a disorganised pattern with some on their sides and some sight side up.

Late last year, Jonathan Pace’s computer found something special. Jonathan is an electrical engineer who also manages computers for charities, so he has a lot of computers, but this one was nothing out of the ordinary. Except for one thing: the computer was running software from the Great Internet Mersenne Prime Search, an international volunteer…

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Double Helix Extra: your new email update! Update

by Jasmine, 28 February 2018 | 0 comments

10 year old holding tablet and atomic model.

Double Helix magazine is excited to announce that we’re merging our newsletters Science by Email and Maths by Email, and adding a splash of technology and engineering news. Keep an eye out for our new look email, called Double Helix Extra!

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Blood-splatter by numbers Activity

by David, 16 February 2018 | 1 comments

A blood spot with measurements for width and length

Blood left at a crime scene can tell you a lot about the events. To rewind the clock and look back in time, you just need a ruler and some trigonometry. You will need Red food dye Chocolate topping (or corn syrup) Water Measuring cup Mixing bowl Spoon Drinking straw Old clothes A large sheet…

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Absolute zero is absolutely impossible! News

by David, 31 January 2018 | 0 comments

Photo of a thermemeter in the scortching sun with a reading of above 100 degrees farenheit.

What’s the coldest thing in the universe? You may have heard of absolute zero, the coldest temperature possible. But a clever bit of mathematics has shown it might not be possible after all!

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Pack it in with pentagons News

by David, 23 January 2018 | 0 comments

Image of a grid, each square is a differrent colour and divided up by different shaped pentagons.

What kinds of shapes pack a flat surface with no gaps? Squares are great for floor tiles, and bees stick hexagons together. With a bit of work, you can get any triangle, no matter how stretched, to fit together without gaps. But what about pentagons? These five-sided shapes are awkward, but some types fit together.

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Hanging by a thread Activity

by David, 27 November 2017 | 0 comments

a picture hanging from two pins

You’ll find yourself going a little loopy with this puzzle, but it’s worth unravelling the secret.

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Ultimate dictators Activity

by David, 14 November 2017 | 0 comments

Julius caesar offers you some smarties

Psychologists often use simple games to determine how people make decisions when sharing and saving rewards, such as cash. In this case, we’ll explore the game of dictators using chocolate!

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