"DK Readers" help a child learn to read and encourage a life-long love of reading. Tick, tock. Long ago, people told time using the sun or water - follow a historical timeline and find out how clocks have changed and become more accurate. "DK Readers" are part of a five-level highly pictorial reading scheme, which uses lively illustrations and engaging stories to encourage reading. Level 2 have long sentences, increased vocabulary, information boxes and a simple index - read them together with children who are beginning to read alone and with early or reluctant readers. There are over 70 titles in the series.