Double Helix Issue 78

Cover of 'Double Helix' magazine issue 78, showing a digital illustration of various 3D shapes balancing on a pedestal together.

Magazine subscription

Uncover the mysteries of maths, make a multiplying machine and learn a maths magic trick!

Join us as we uncover the mysteries of mathematics! Meet Karlie, a mathematician who looks at the stars. Mathematicians have been doing that for centuries, so look back and learn how maths and stars showed sailors the way home. We’ve got some amazing new breakthroughs in geometry to wonder at. And we’ve uncovered the history of the strangest, roundest number – zero! + Full description

We’ve got heaps of maths games for you to do at home, too. Learn to solve a sudoku, or perform a mathematical magic trick. We’ve got an amazing multiplying machine you can make at home. And if you’re up for a challenge, why not learn to write numbers like the Inca did – with knots in string!

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News

Issue publication date: 1 March 2025

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Details

Magazine | March 2025 | $ 11.99
ISBN: DH10/78 | 40 pages | 297 x 210 mm
Publisher: CSIRO Publishing
Colour illustrations, Colour photographs

Features

Looking for science, technology, engineering and maths news? We've got you covered! Inside every issue you'll find articles, activities, puzzles, comics and prizes galore.

Features
MATHS, MYSTERIES AND THE MILKY WAY DREAMING – Meet Karlie Noon and hear about her inspiring journey to become a mathematician
NEW GEOMETRY – Check out these amazing new discoveries in the world of shapes!
NAVIGATING THE WORLD – Before GPS, we needed a lot of maths to keep from getting lost
MAGNIFICENT MATHS MACHINES – Humans have invented a lot of different calculators
THE STORY OF ZERO – Where did zero come from? And what makes it such a wonderful and strange number?

Regulars
Snippets
Poster
Reviews
Time-travelling Shed
Planetary Post
Tech Timelines
Back of the Envelope
Microscope
Fiction

Activities
Maths Magic Trick
Inca Quipu Numbers
Solve A Sudoku
Make It Comic
Ethical Hacker
Puzzles

Competitions
Stay Positive
Maths Magic
Hot Potato Maths

Authors

The Double Helix team is part of CSIRO Publishing and has a long-standing reputation for delivering expertly written, fascinating and fun science material for young people, with an aim to foster an interest in science, technology, engineering and maths (STEM).