This activity book includes a code-breaking section for secret messages.
The Cryptoclub: Using Mathematics to Make and Break Secret Codes by Janet Beissi
This activity book has a section for writing short stories based on prompts.
The Cryptoclub: Using Mathematics to Make and Break Secret Codes
What stands out about this activity book is the lack of fluff—just solid fun.
The Cryptoclub: Using Mathematics to Make and Break Secret Codes 2006 Paperback
What stands out about this activity book is the high-quality paper used.
Cryptoclub : Using Mathematics to Make and Break Secret Codes by Janet…
The book is illustrated with collage art made from old photographs.