Puzzles, secret ciphers, hidden messages: discover the world of codes!Codes have been used by spies, queens, mathematicians, generals, archaeologists - and you! This stylishly illustrated non-fiction book introduces the key concepts and figures in codemaking and codebreaking, from Caesar shifts to the Enigma machine. Discover snapshots of history, and learn simple codes!This book is a Readerful Book for Sharing. It is for an adult to read aloud to children aged 8 to 9. Readerful: Inspiring Children to Read MoreReaderful is a specially designed reading library that motivates children aged 4-11 to develop a lifelong love of reading. The series offers contemporary, inclusive books across three key collections: Books for Sharing: Picture books to be read aloud by an adult for inspiring reading sessionsIndependent Library: Fiction, graphic texts, character mini-series and non-fiction for children to read independentlyRise: Fully decodable books for older struggling readers to read independently.How Readerful works: &#8226 Read aloud the Books for Sharing for magical reading sessions that motivate children to read more. &#8226 Encourage children to choose a book to read by themselves, from Readerful's Independent Library or from Rise. You'll find links between the books' topics, vocabulary, characters and authors - all designed to keep children reading, boost their vocabulary and develop their knowledge of the world around them.