by David, 13 January 2014 | 4 comments

Written by Gabrielle Tramby In this activity you’ll do maths like a computer. It’s a bit tricky, so younger readers may want to read the ‘What’s Happening?’ section first.

Continue reading Decoding binary numbersCategories:

by David, 24 December 2013 | 1 comments

Grab some tokens and let’s go! Here’s a simple game to play with a friend.

Continue reading A game of Nimby David, 17 December 2013 | 0 comments

See if you can work out this puzzle. You might like to use an advent calendar to solve it, or maybe you could work it out in your head first!

Continue reading An Advent puzzleby David, 12 November 2013 | 2 comments

Here’s an easy game to try with a friend. All you need is a pen and paper.

Continue reading Guess my numberby David, 29 October 2013 | 2 comments

This activity sounds super easy from the title, but there’s more to it than you might expect!

Continue reading Folding a piece of paper in halfby David, 8 October 2013 | 0 comments

There are some surprising patterns that can be revealed in Australian coins if you take a closer look.

Continue reading Measuring moneyby David, 3 September 2013 | 5 comments

How likely is it that at least two people out of 30 will share a birthday?

Continue reading Birthday paradoxby David, 22 July 2013 | 0 comments

1. Pi (or π) is a number that helps describe circles. It links the width of a circle with its perimeter, or the radius of a circle with its area, or the width of a ball and its volume. It’s the same number no matter how big your circle is – about 3.14159265.

Continue reading Approximately pi facts about pi approximation dayCategories:

by David, 10 July 2013 | 0 comments

Three and five. Five and seven. Eleven and thirteen. Prime numbers often appear as twins, only two apart. For hundreds of years, mathematicians have wondered – is there a biggest pair of twin primes, or does the list of twins keep going forever?

Continue reading A giant step for twin primesCategories:

by David, 18 June 2013 | 0 comments

How did people multiply before calculators were invented? You could try doing it in your head, but you could also use a mechanical calculator, such as this set of Napier’s bones.

Continue reading Napier’s bones