Book Description: This text looks at ways of communication, semaphore, sign and body language, origins of the spoken word, morse code, letter writing and telecommunications. It is part of a series which explores the development of systems of recording and measuring. from the first forms of writing and the earliest calendars, to the latest in calculators and quartz clocks. Innovators, inventions and facts are highlighted in text boxes, and there are suggestions for related activities. The books support the National Curriculum for history at Key Stages 1 and 2.