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Make a pi necklace Activity

by David, 19 September 2019 | 0 comments

Image of a person wearing a necklace

Written by Gabrielle Tramby and Rachel Fitzgerald In this activity, you’ll turn a number into a necklace. Pi (π) is the name of the number you get when you divide the circumference (distance around the outside) of a circle by its diameter (distance across it). No matter how big or how small a circle is,…

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BBQ brainteaser Brainteaser

by Jasmine, 18 September 2019 | 0 comments

Brain icon

Written by Kerry Dent Difficulty: Tricky On the expedition’s small BBQ, only two potato cakes will fit at the same time. If it takes five minutes to cook one side of a potato cake and five minutes to cook the other side, what will be the minimum time required to cook three potato cakes on…

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The Beauty Beneath – Underwater Sydney Book

by David, 12 September 2019 | 0 comments

seaweed and fish under the sea

Dip below the surface to discover the extraordinary plants and animals that call Sydney Harbour home.

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It’s a gas! A quick quiz Quiz

by David, 11 September 2019 | 0 comments

Black lightning bolt in purple circle

Time for another quiz! We’ve got a few questions about gases you might encounter every day. Have a go and see if you can get the top score!

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Levitating card Activity

by David, 5 September 2019 | 0 comments

Man blowing through a cotton reel.

Normally, when you blow on a piece of card, it flies away. But in this activity, you can blow to pull the card towards you with the science of air pressure!

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The difficult dial Brainteaser

by David, 4 September 2019 | 0 comments

Brain icon

While working on an old weaving machine, Aisha spied a dial that needed repairing. The dial had numbers counting upwards, evenly spaced around the outside. Although she couldn’t see the whole dial, she could see that the number 6 was directly opposite 17. Can you work out how many numbers there are on the dial?

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Behind the scenes at Double Helix magazine News

by David, 29 August 2019 | 0 comments

Double Helix magazine is packed with news, facts, fun experiments and giveaways, perfect for enquiring minds. Editor of the magazine, Jasmine Fellows, takes us behind the scenes to explain how they create each issue.

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Digging deep – a quick quiz Quiz

by David, 28 August 2019 | 0 comments

Black lightning bolt in purple circle

We’re going deep underground. Dig into your memory, and see if you can get all the answers right!

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Air cannon Activity

by David, 22 August 2019 | 0 comments

Cup with plastic wrap and ticket targets in the background.

Want to reach out and touch something with a puff of air? This tiny air cannon shoots vortexes of air that can be felt from metres away!

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Pademelon paddocks brainteaser Brainteaser

by David, 21 August 2019 | 0 comments

Small marsupial with large back legs and tail for hopping.

Fred is a biologist doing an experiment with pademelons. They have a square paddock and four feeding bowls. They also have two laser detectors that each shoot a straight beam all the way across the paddock.

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