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trick posts

Water balancing trick Activity

by David, 29 November 2018 | 0 comments

A five cent coin with a convex drop of blue water covering the surface.

Here’s a balancing game, but with a bit of practice you will always win! Why? Because you’ve set up a clever trick.

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Half of 12 brainteaser Brainteaser

by David, 16 May 2018 | 0 comments

Brain icon

You probably know that half of 12 is six. But the other day, I caught a glimpse of a clock peeking between buildings. At that moment, I noticed that sometimes, half of 12 is seven. How is this possible?

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Super strong pencil Activity

by David, 4 January 2017 | 0 comments

In this trick, you’ll wrap a shoelace around a pencil and a strip of cardboard. The string seems to pass straight through both, tearing the cardboard, but leaving the pencil untouched! You will need Pencil 2 rubber bands Thin cardboard Scissors Shoelace Some friends to impress

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Counting by division Activity

by David, 5 December 2016 | 0 comments

Let’s look at a few interesting patterns you can get by dividing. Some of these patterns need a lot of digits, so get the best calculator you can find. If you have a computer with the internet handy, there are some good online calculators to use, such as wolframalpha.com. Some mathematicians might prefer to use…

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Pool trick shots Activity

by David, 22 April 2014 | 0 comments

NOTE: If you don’t know how to use a pool cue to hit balls, ask someone to teach you. It’s not hard, but if you do it incorrectly you might damage the table. You will need A pool table Three pool balls – we used a white, a yellow and a red ball A cue…

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Bounce back Activity

by Jasmine, 17 January 2013 | 0 comments

Challenge your friend to bounce a ball across a table. With this one simple trick, you can get it to bounce back!

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