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Hands-on posts

Fake snot Activity

by David, 9 December 2020 | 0 comments

Spoon dripping jelly like green liquid into a bowl.

Here’s some gross science for you to get hands-on with! This gloopy recipe produces some amazing fake snot.

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Cone star Activity

by David, 26 November 2020 | 0 comments

Star made from multiple coloured paper cones.

The holidays are coming, and it’s time to start decorating. What better way than a bright, colourful, mathematical star decoration!

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Mountain air pressure Activity

by David, 12 November 2020 | 3 comments

Holding up an eempty drink bottle with mountain in the background.

Here’s a great excuse for a trip up a mountain! Grab some bottles and learn why it’s hard to breathe at the top of tall mountains.

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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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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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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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Shiny egg Activity

by David, 10 September 2020 | 2 comments

Photo of a soot covered egg in a glass of water.

What happens when you cover an egg in soot? It gets super black, but also super shiny!

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Geodesic rings Activity

by David, 20 August 2020 | 0 comments

A child's hand ontop of a larger hand, both hands are wearing colourful rings

Craft yourself a mathematical ring to learn about straight lines on donuts. Don’t laugh, they do exist!

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Beeswax food wraps Activity

by David, 6 August 2020 | 1 comments

Sandwich wrapped in a wax cloth wrap.

Here’s a fun way to keep your food fresh! Make your own food wraps, and reduce the amount of plastic wrap you use. Safety: This activity uses a hot iron to melt wax. Ask an adult for assistance.

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