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Posts by David

A crowded bus brainteaser Brainteaser

by David, 24 November 2021 | 0 comments

Brain icon

Difficulty: Fun The number 39 bus was packed as it pulled into the interchange. Then 37 people got off, and another 14 got on. As the bus left the interchange, there were 37 people on board. How many people were on the bus as it pulled into the interchange?

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Is your cat secretly tracking you? News

by David, 19 November 2021 | 0 comments

Photo of a cat crouching on the ground.

Cats are quiet and sneaky. When they’re out of sight, it’s almost impossible to keep tabs on them. But what about the other way around – does your cat know where you are, even when you’re out of sight?

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Meet Dr Keith Bannister: astronomer and engineer News

by David, 11 November 2021 | 0 comments

Photo of Keith Bannister sitting in front of a computer screen.

By Rachel Rayner Dr Keith Bannister knew from an early age he wanted to do something technical with his life. The bedroom floor of his childhood home was usually littered with wires, screws, nuts and bolts.

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Joining five dots brainteaser Brainteaser

by David, 10 November 2021 | 2 comments

Brain icon

Difficulty: Extreme! Ziqi’s teacher loved puzzles, and posed a difficult challenge: “Draw five dots on a piece of paper. Now, connect each dot to every other dot. Each pair of dots needs to be connected by a line, which doesn’t need to be straight.”

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Make The Dish! Activity

by David, 4 November 2021 | 0 comments

Paper model of radio telescope with starry background.

By David Shaw and Domonkos Szabo The Parkes radio telescope, turned 60 this week! To celebrate, why not make a model of The Dish?

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Give someone the gift of Double Helix! Offer

by David, 3 November 2021 | 0 comments

Double Helix magazine is the gift that keeps giving the whole year! Perfect reading for young enquiring minds, each magazine is packed with news, features, fun experiments, giveaways and more. Double Helix is CSIRO’s science magazine and is a wonderful STEM inspiration for kids aged 8–13. We recently did a story about how young readers…

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Leaves – a quick quiz Quiz

by David, 3 November 2021 | 0 comments

This quiz has a leafy theme. Can you get the high score, or will it leave you heartbroken?

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Make an electroscope Activity

by David, 28 October 2021 | 0 comments

Foil strips dangling inside a cup.

By Patrick Mahony Have you ever been surprised by a static shock? This clever device can measure electrical charge!

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Fibre fun! A quick quiz Quiz

by David, 27 October 2021 | 0 comments

This quiz is all about fibres. From fabric to food, there’s plenty of fibre to chew over!

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Scuba-diving lizards News

by David, 21 October 2021 | 0 comments

Lizard underwater with a bubble on its head

By Cordelia Jerjen Aquatic bugs use bubbles to breathe underwater. But this natural mechanism for underwater breathing has never been thought possible in vertebrates (animals with a backbone). In a first-of-its kind discovery, scientists have found that anoles – a type of semi-aquatic lizard – share this trick.

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