The Erudite Platypus
Is it scrap paper or a hidden message?
After watching bits of the fictitious movie "National Treasure" the class wanted to explore messages with lemon juice. Our supplies were: 1) bottle of lemon juice concentrate 2) copy paper 3) Q tips 4) imagination The students were given directions written in a simple Cesar Cipher that had been taught previously. Once they had decoded the instructions, they began writing their messages. We let the messages dry over night. I opted to use the old school method of using heat fro
