Learn the fun way with Derek O'Brien! * Page after page of colourful illustrations and interesting information that help you learn quickly. * Separate pages of facts and quizzes to help you grasp information at a glance. * Eight sections on People, Sports, Travel, Science, Nature, India, History and Literature and a Mixed Bag provide detailed overviews of various areas of knowledge. * Comprehensive revision tests let you find out how much you have learnt. The best knowledge activity book in the Indian market from the biggest name in children's quizzing today. Discover with Derek is a four-part knowledge-n-quiz activity book for 6 to 13 year olds. The Primer is for 6 & 7 year olds. Part 1 is for 8 and 9 year olds. Part 2 is for 10 and 11 year olds. Part 3 is for 12 and 13-year olds.