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Shape weighing brainteaser Brainteaser

by David, 28 October 2020 | 0 comments

Four scales in a row, weighing 3,5,8 & ?

By Rok Willesee Difficulty: Tricky A scientist was looking back at notes they made about their experiments. Unfortunately, in one experiment the scales didn’t work. Can you help them work out what the weight should be in the final experiment?

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Unchecker the board Activity

by David, 22 October 2020 | 0 comments

Someone is sliding a black counter on a grid

Here’s a quick sliding puzzle to get your brain pumping. See if you can separate the light and dark counters in as few moves as possible!

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Best foot forward – a quick quiz Quiz

by David, 21 October 2020 | 0 comments

Black lightning bolt in purple circle

There’s something afoot in this quiz! Can you get 5/5 and become a leg-end?

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Sugar snake Activity

by David, 16 October 2020 | 0 comments

Ash and flames in a foil tray.

Here’s a fun little firework you can make at home. A couple of simple household chemicals grow into a gigantic black snake!

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Making More Hands-On Science Update

by David, 15 October 2020 | 0 comments

This month, CSIRO released its latest collection of favourite hands-on activities for kids. The Double Helix editorial team explains the thinking, splashes, scares and surprises they encountered while testing their new book: More Hands-On Science.

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Two eggs brainteaser Brainteaser

by David, 14 October 2020 | 3 comments

Brain icon

Difficulty: Taxing Jenny found a strange sum written on a piece of paper: EGG + EGG = PAGE Each letter represents a different digit, so P might be 1, for example. Can you work out what the sum really is?

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Wet weather ahead! News

by David, 9 October 2020 | 0 comments

A kookaburra in the rain

The Bureau of Meteorology is predicting a wet spring and summer for Australia. How can they be confident in these long-term predictions? It’s because they’re not just watching weather as it happens, they’re also looking at what causes the weather.

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Fun factoids – a quick quiz Quiz

by David, 7 October 2020 | 0 comments

Black lightning bolt in purple circle

Are you a science trivia buff? See if you know these fun factoids!

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Dragon curves Activity

by David, 1 October 2020 | 0 comments

Strip of paper folded at regular intervals making a pattern

In this sample from More Hands-on Science, we’re looking at infinitely detailed shapes known as fractals. If you do this activity, you can discover a fractal called the dragon curve!

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Mathematical cloning brainteaser Brainteaser

by David, 30 September 2020 | 0 comments

Brain icon

Difficulty: Taxing Grab a calculator (or a pen and paper) Choose a three-digit number (e.g. 123) Multiply it by 7 Multiply the answer by 11 Multiply that answer by 13 You will get your starting number written out twice! (e.g. 123 123) The question is, can you work out why?

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