by David, 16 May 2018 | 0 comments

You probably know that half of 12 is six. But the other day, I caught a glimpse of a clock peeking between buildings. At that moment, I noticed that sometimes, half of 12 is seven. How is this possible?

Continue reading Half of 12 brainteaserCategories:

by David, 2 May 2018 | 1 comments

When you multiply a whole number by itself, you get a square number. When you take three copies of a whole number and multiply them all together, you get a cube number. There’s only one two digit number that is both a square and a cube. Can you work out what number it is?

Continue reading Square and cube number brainteaserCategories:

by David, 18 April 2018 | 3 comments

Jenny’s hard at work on a building site. This problem will tax her brain as well as her brawn!

Continue reading Jenny’s building site brainteaserCategories:

by David, 12 April 2018 | 0 comments

It’s that time of year again! The winner of the Abel prize, mathematics’ answer to the Nobel, has been announced. This year’s winner is Robert Langlands, a mathematician more famous for asking questions than answering them.

Continue reading Mathematical hunches inspire decades of researchCategories:

by David, 4 April 2018 | 0 comments

Terri’s just about to leave to go to a party. She’s trying to work out whether to walk or ride her bike. If she walks at a brisk pace of 5 kilometres per hour, she’ll be an hour late. If she rides her bike at 10 kilometres per hour, she’ll be an hour early! How…

Continue reading Terri’s transport brainteaserCategories:

by David, 21 March 2018 | 4 comments

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?

Continue reading Coded message brainteaserCategories:

by David, 7 March 2018 | 2 comments

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

Continue reading 1936 brainteaserCategories:

by David, 1 March 2018 | 0 comments

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…

Continue reading Catching a colossal primeCategories:

by Jasmine, 28 February 2018 | 0 comments

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!

Continue reading Double Helix Extra: your new email update!Categories:

by David, 16 February 2018 | 1 comments

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…

Continue reading Blood-splatter by numbers