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Spy Science

 

Spies used to come up with ingenious ways to pass information in secret.

Can you work out what this secret message says: 

STNEGA MRET FLAH YRAURBEF NUF A EVAH  

 

One way of hiding messages was writing in invisible ink. There are many simple ways of creating invisible ink using store cupboard ingredients! One example that I have tried in the past is lemon juice…click link for some other ingenious ways of concealing secret messages and have a go at making your own:

 https://www.wikihow.com/Make-an-Invisible-Ink-Message 

 

Challenge: Write a results table of the most/least effective

 

Be sure to take lots of photographs and annotate with the methods you used. Please note that some experiments will involve using heat of some kind - please ask an adult for permission when using any form of heat.

 

Examples below

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