# Blog

## Brainteaser: Magic trick tricks

By Ariel Marcy, 24 April 2024

Miguel hopes to become a magnificent mathematical magician. For his first trick he wants to present a standard 52-card deck and dramatically draw a face card (Jack, Queen or King). If the deck is randomly shuffled, what is the probability that Miguel will draw a face card on the first try?

Categories:

## Magical weights

By Ariel Marcy, 14 November 2023

Difficulty: Fun Ellen has a set of 6 weights that come in pairs. One pair is a magical set of negative weights (think helium balloons that take weight away). 2 of the weights are 1 kilogram each, 2 of the weights are 5 kilograms each, and the 2 magical weights are -3 kilograms each. Ellen […]

Categories:

## Magic colouring

By David Shaw, 13 May 2021

Here’s a great trick of the light that looks like magic. Put a picture into water, and the colour disappears! And the best thing is, the colour comes back when you take the picture out again.

Categories:

## Water balancing trick

By David Shaw, 29 November 2018

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

Categories:

## Super strong pencil

By David Shaw, 4 January 2017

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!

## Counting by division

By David Shaw, 5 December 2016

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.

## Bounce back

By Jasmine Fellows, 17 January 2013

Challenge your friend to bounce a ball across a table. With this one simple trick, you can get it to bounce back! Written by Justin McGuire You will need Bouncy ball, with rubber on the outside Table Tray or other flat object Glass of water Another person What to do Have a person stand at […]

Categories:

## Why choose the Double Helix magazine for your students?

Perfect for ages 8 – 14

Developed by experienced editors

Engaging and motivating

*84% of readers are more interested in science

Engaging students voice