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geometry posts

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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A Christmas packing puzzle Activity

by David, 24 December 2019 | 0 comments

Merry Christmas! Here’s our maths gift to you – a puzzle.

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Power pole problems Brainteaser

by David, 30 October 2019 | 0 comments

Brain icon

Difficulty: Fun Sergio is an electrician repairing a power line. There’s a stretch of eight, evenly spaced power poles he’s working on. The distance from the first to the fourth is 120 metres. What’s the distance from the first to the eighth pole?

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Spin and flip brainteaser Brainteaser

by David, 16 October 2019 | 2 comments

Brain icon

Difficulty: Tricky I’ve got a square piece of paper, with lines for writing on both sides. Right now, the lines are running up and down the page. To get the lines running left and right, I could rotate the page, but that’s too boring. Can I do it by flipping the page instead?   Scroll…

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This shape is a lie! Activity

by David, 30 May 2019 | 0 comments

This shape has a little secret. It’s known as a chamfered cube, and it’s not as perfect as it first seems…

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Tom’s quilt brainteaser Brainteaser

by David, 17 October 2018 | 0 comments

Brain icon

Tom’s just finished sewing a quilt! It’s made of lots of equal-sized squares of fabric sewn together. Currently, it’s 12 squares long and six squares wide. Tom tried putting the quilt on his bed, but it’s the wrong shape.

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Winning at maths News

by David, 23 August 2018 | 0 comments

A gold disc or medal with a bearded man's portrait.

Time to celebrate! For only the second time ever, an Australian has won the most famous prize in mathematics – the Fields Medal. Let’s take a moment to celebrate the achievements of the winner, Akshay Venkatesh.

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Mathematical hunches inspire decades of research News

by David, 12 April 2018 | 0 comments

Abstract image of glowing colours and shapes.

It’s that time of year again! The winner of the Abel prize, mathematics’ answer to the Nobel, has been announced. This year’s winner is Robert Langlands, a mathematician more famous for asking questions than answering them.

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Blood-splatter by numbers Activity

by David, 16 February 2018 | 1 comments

A blood spot with measurements for width and length

Blood left at a crime scene can tell you a lot about the events. To rewind the clock and look back in time, you just need a ruler and some trigonometry.

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Pack it in with pentagons News

by David, 23 January 2018 | 0 comments

Image of a grid, each square is a differrent colour and divided up by different shaped pentagons.

What kinds of shapes pack a flat surface with no gaps? Squares are great for floor tiles, and bees stick hexagons together. With a bit of work, you can get any triangle, no matter how stretched, to fit together without gaps. But what about pentagons? These five-sided shapes are awkward, but some types fit together.

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