Over 50 Secret Codes (Activity and Puzzle Books)

by EmilyBone (Author), SamMeredith (Illustrator)

• Used

  Paperback
  2015

  $3.40

  Children love to learn secret codes and write encrypted messages and this book will teach them everything they need to know, including Semaphore and Morse code, Grid code used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching codes.

• New

  Paperback
  2015

  $8.10

  Children love to learn secret codes and write encrypted messages and this book will teach them everything they need to know, including Semaphore and Morse code, Grid code used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching codes.