Build your child’s reading confidence at home with books at the right level What are codes for and who uses them?How do you make a code, how do you break a code? If you think only spies and soldiers use codes, you're wrong!Find out how codes have been used throughout history, from Ancient Egypt through to the Cold War in this enthralling non-fiction book by award-winning author, Richard Platt. Emerald/Band 15 books provide a widening range of genres including science fiction and biography, prompting more ways to respond to texts. Text type: A non-chronological reportThis book has been quizzed for Accelerated Reader.