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make science accessible with this essential series that will capture children’s imagination while laying the foundation for future learning. with age-appropriate language and an eye-catching design, discover science gives young readers the answers to fundamental questions about the human body, animals, planet earth and the solar system (1)
the farther we get from our grade school days, the easier it is to forget those operations and nuances of arithmetical computation that keep recurring in our daily lives: interest and discount problems, time-payment calculations, tax problems, and so on. this handy book is designed to streamline your methods and resharpen your calculation skills for a variety of situations. starting with the most elementary operations, the book goes on to cover all basic topics and processes of arithmetic: addition, subtraction, multiplication, division, fractions, percentage, interest, ratio and proportion, denominate numbers, averages, etc. the text continues into other useful matters, such as powers and roots, logarithms, positive and negative numbers, harmonic progression, and introductory concepts of algebra. entirely practical in approach and using an easy-to-follow question and answer style, this book covers a wide range of common knotty areas: filling and emptying receptacles, scales for models and maps, business and financial calculations (partial payment problems, compound interest, bank and sales discount, profit and loss problems, etc.), angle measurement, mixtures and solutions, graph and chart problems, and the like. the discussion contains numerous alternate and short-cut methods, such as quick ways to figure compound interest; to square a number from 1 to 100; to divide by 5, 25, 125, 99, etc.; to multiply two 2-digit numbers having the same figure in the tens place; and many more. these valuable tips, together with the huge fund of exercise problems (a total of 809, half of them answered in an appendix), help you to increase your computational proficiency and speed, and make this an extremely useful volume to have on your shelf at home or at work. anyone who has to do any figuring at all -- housewife, merchant, student -- will profit from this refresher. parents will find it an excellent source of material for helping children in school work. show more (1)
what? where? why? questions and answers about nature asks a variety of questions such as 'how do caterpillars grow up?', 'why are whales such whoppers?', 'how does the frilled lizard trick its enemies?', 'why do peacocks show off?', 'how can a shark drown?' and 'what is a rainforest?' plus hundreds more. containing information taken from the question time titles creepy-crawlies, mammals, reptiles, birds, sharks, seashore and rainforest, with brand-new pages on fish, this bumper volume is sure to delight the inquisitive reader. carefully researched and created to fulfil early-learning needs, the book covers a wealth of popular natural history subjects that will stimulate children's curiosity. the topics are explored in great detail with engaging text, and supported by colourful and inviting illustrations that bring the natural world vividly to life. further information is supplied alongside photographs, amazing facts appear with eye-catching cartoons and a now i know feature reinforces the facts that have been explained. this focused approach will provide a solid basis of knowledge, as well as inspire and educate (1)

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检索条件： Childrens questions and answers. ( 主题词 )

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1 图书 Discover Science: Solar System
责任者 Mike Goldsmith

出版信息 Kingfisher ,2010-08-16

ISBN 978-0-7534-1999-1

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Mike Goldsmith.Discover Science: Solar System.Kingfisher,2010-08-16.
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Discover Science: Solar System

Mike Goldsmith.Kingfisher,2010-08-16.
2 图书 What? Where? Why?: Questions And Answers About Nature?
责任者 Claire Llewellyn

出版信息 Kingfisher ,2005-09-19

ISBN 978-0-7534-1204-6

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Claire Llewellyn.What? Where? Why?: Questions And Answers About Nature?.Kingfisher,2005-09-19.
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What? Where? Why?: Questions And Answers About Nature?

Claire Llewellyn.Kingfisher,2005-09-19.
3 图书 Arithmetic Refresher
责任者 A. A. Klaf

出版信息 Dover Publications, Inc. ,1964

ISBN 978-0-48621-241-8

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A. A. Klaf.Arithmetic Refresher.Dover Publications, Inc.,1964.
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Arithmetic Refresher

A. A. Klaf.Dover Publications, Inc.,1964.

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