School Science and Mathematics, Volumen9Smith & Turton, 1909 |
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acid alcohol algebra and geometry angle animals apparatus applied arithmetic Association atoms biology botany cents Chairman chemical chemistry Chicago committee compounds course definition diameter discussion duodecimal elementary elementary algebra equal equations experiment fact field Forest fundamental G. B. M. Zerr give given glass heat high school hydrochloric acid illustrated important inches insects instruction interest knowledge laboratory Lake Forest Academy laws material measure meeting ment metal method nature Normal School organization physics plane plane geometry plants possible practical preparation present principles problems produced Professor pupils question relation SCHOOL SCIENCE SCIENCE AND MATHEMATICS scientific secondary school Shortridge High School side solid geometry solution student tally sticks taught teacher teaching temperature text-book theory thermoscope things tion topics triangle trigonometry tube University valence weight York York City zoology
Pasajes populares
Página 614 - ... the ratio of the ovendry weight of a sample to the weight of a volume of water equal to the volume of the sample at some specific moisture content, as green, air-dry, or ovendry.
Página 462 - Orton. formerly of the Bureau of Plant Industry of the United States Department of Agriculture.
Página 665 - American Journal of Education, Milwaukee, Wis. American Primary Teacher, Boston, Mass. American School Board Journal, Milwaukee, Wis. Arkansas School Journal, Little Rock, Ark.
Página 545 - The course of instruction in physics should include: (a) The study of one standard textbook, for the purpose of obtaining a connected and comprehensive view of the subject. The student should be given opportunity and encouragement to consult other scientific literature.
Página 285 - ELIOT OF HARVARD fittingly says: — " The International is a wonderfully compact storehouse of accurate information" SHOULD YOU NOT OWN SUCH A BOOK in order to answer quickly and with final authority the many questions arising daily concerning new words, spelling, pronunciation, definition, etymology, synonyms, etc.?
Página 147 - ... membrane upon the liquid surface. 24. Capillarity. — A striking action of the surface film of a liquid is seen in the rise of liquids in tubes of small bore when the liquid wets them. If the liquid does not wet the tube, as when mercury is placed in glass, the liquid is depressed. It is found in general that: Liquids rise in capillary tubes when they wet them and are depressed in tubes which they do not wet; the smaller the tube the greater the change of level. (See Fig. 15.) This action is...
Página 532 - Throughout the whole course special attention should be paid to the common illustrations of physical laws and to their industrial applications. 4. In the solution of numerical problems, the student should be encouraged to make use of the simple principles of algebra and geometry to reduce the difficulties of solution. Unnecessary mathematical difficulties should be avoided and care should be exercised to prevent the student's losing sight of the concrete facts in the manipulation of symbols.
Página 668 - Too often our course of study of an animal. or plant takes the easiest rather than the most illuminating path. What is easier, for instance, particularly with large classes of restless pupils who apparently need to be kept in a condition of uniform occupation, than to kill a supply of animals, preferably as near alike as possible, and set the pupils to work drawing the dead remains ? This method is...
Página 71 - The sum of any two face angles of a triedral angle is greater than the third. The theorem requires proof only when the third angle considered is greater than each of the others.
Página 367 - Money Saved and Less Material Needed. — It is estimated that a fence post, which under ordinary circumstances will last for perhaps two years, will, if given preservative treatment costing about 10 cents, last eighteen years. The service of other timbers, such as railroad ties, telephone poles, and mine props, can be doubled and often trebled by inexpensive preservative treatment. To-day, when the cost of wood is a big item to every farmer, every stockman. every railroad manager — to...