How to Write a Secret Message
You and your friends like playing
“Spy Kids”. You are ready to take your spy skills to the next level. How can you send a
secret message to your friends that only your group can read? You write in invisible ink. But how can
you make your own?
This is what you need:
Heat (a light bulb, or an iron)
This is what you
Dip the round side of the toothpick in the lemon
Write your secret message on the paper.
Let the paper dry until you can’t read it anymore.
Send it to your
Have them move the paper back and forth over the
As the lemon juice heats up the message can be
Remember: if you use
an iron, get help from an adult.
you get help from an adult with?
|buying lemon juice|
|a light bulb|