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科学读本(英文原版)(第1册)pdf/doc/txt格式电子书下载

书名:科学读本(英文原版)(第1册)pdf/doc/txt格式电子书下载

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作者:(美)文森特·默奇著

出版社:天津人民出版社

出版时间:2013-05-01

书籍编号:30143748

ISBN:9787201081007

正文语种:英文

字数:17848

版次:1

所属分类:外语学习-英语读物

全书内容:

西方家庭学校经典教材读本


科学读本(英文原版)(第1册)


(美)文森特·默奇 著


天津人民出版社

Foreword


This series of Science Readers was published for the use of teachers and students. It will be found useful, not only in those schools in which Elementary Science is taken as a class subject, but also for the purposes of an ordinary reader.


Of this series of Science Readers, Books I, II, and III are adapted to pupils who are in their third and fourth years of school work. Both the reading and the subject matter of Books IV, V, and VI are suitable for Senior Grades.


It is hoped that the young readers who follow them through these lessons will catch something of the enthusiasm and earnestness which characterize them as they advance step by step from very small beginnings to a real understanding of the elementary facts of natural science.


The subject matter in this volume is intended for higher level students, and includes not only a more in-depth study of the natural sciences, but also attempts to inform the student as to the connection between scientific advances and economic growth.


At the time of this series’ original publication, economic matters were often discussed in British standards; therefore, the student will find that in the later volumes of the Elementary Science Readers, British economics and manufactures are discussed quite frequently. This held true even for the American students who originally used


these readers as a textbook to accompany their Elementary Science class studies.


Furthermore, in the nineteenth and early twentieth centuries, hunting, fur-and ivory-trading, and deforestation had become highly developed industries of commerce, to the point where rampant and indiscriminate activities had caused great devastation to the natural world. In modern times, we seek to conserve the natural world, and have put in place protection and preservation laws that are respected and strongly adhered to around the globe; therefore, the reader must approach the lessons dealing with this subject matter with an open mind, and an understanding that this type of activity, while unfortunate, remains a part of history and should be addressed as such.


In spite of some of the inevitable discrepancies between the modern world and the one in which this series was originally published, these science readers remain an excellent source of knowledge of the fundamental facts of the natural sciences, and the enthusiasm and earnestness which characterize these lessons are sure to draw the reader in.

Lesson 01 Water


Fred and his cousin Willie were two smart boys in the same class at school. They were only little boys, but they were fond of their school and their lessons.


They used to play at school in the evening with Fred’s little sister Norah.


Their teacher was giving the class jolly lessons on some of the common things around them. These were not at all like the other lessons of the day. Teacher gave them to the class as a treat. The boys soon began to look forward to them, as the best of all their lessons.


Norah, too, liked to hear all about them from the boys. It was great fun to sit around the fire in the evening, and chat over the lessons of the day.


The first lesson was about water.


“What do you think, Norah?” said Fred one evening. “Teacher began to talk to us about water, by showing us a saucer full of sawdust.


“He piled up the sawdust in a heap in the saucer, and then tried to do the same with some water in another saucer.”


科学读本(英文原版)(第1册)pdf/doc/txt格式电子书下载


“But, of course, he couldn’t do it,” said Willie, “because you can’t make water stand up in a heap. It always keeps a flat or level surface.”


“Yes; and, when it got to the top of the saucer, it ran away over the sides, and on to the table,” added Fred. “We saw it flow along the table, and fall down to the ground.”


“Why, of course,” said Norah, “water always flows down. We can see it flow down, if we turn on the tap. It never flows up.”


“Teacher told us to think of the rain, too,” said Willie. “The drops of rain always fall down—never up.”


“I can show you some drops of water.” said Fred. “Look; I dip this brush in the water, and shake it. The water will fall from the brush in little round drops.”


SUMMARY


We cannot pile up water in a heap; it always keeps a level surface. Water breaks up into little drops, and flows about. Water always flows down.

Lesson 02 Water—A Liquid


Norah’s mother called her away to mind the baby, before the boys had told her all about their lesson.


She came back as soon as she could, and they began to chat again.


“I wonder whether Norah forgets what we learned about water,” said Fred.


“No,” said Norah, “I don’t forget. I know that water flows, and it always flows down. It keeps a flat surface, and it cannot stand in a heap. It breaks up into round drops, but the drops will run together again, and make a pool of water.”


“Quite right,” said Fred. “But now I’m going to puzzle you. Can you tell me what shape water is?


“Teacher tried to puzzle us; didn’t he, Will? But he soon made it clear. He showed us the saucer, and we saw that it was round. Then

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