School Science and Mathematics, Svazek 13

Přední strana obálky
School Science and Mathematics Association., 1913
 

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Obsah

An Elementary Exposition of the Tides ConcludedEdison Pettit 8
104
Coal Waste
117
Private Lands in Yosemite National Park
132
A Heliostat for the Lecture RoomWilliam F Rigge
139
Biology in the High SchoolsHerbert F Roberts
146
Elk and Buffalo in Yellowstone Park
152
Education Notes
161
Books Received
178
Trade with Our Advertisers They will Deal Squarely with
182
Science in the High Schools an InvestigationWorrallo Whitney
183
The Country SchoolTeacher as a PublicHealth Educator
196
Models for Teaching Solid Geometry
210
A New Method of Exploring Magnetic Potential and Force Fields and
220
Note on a Device to Illustrate the Path of a ProjectileJ H C Bagby
224
An Induction ApparatusC F Adams
240
Problem DepartmentE L Brown
252
Indiana State Science and Mathematics Association Meeting
258
Requisites of Good Glass Sand
264
Science and Mathematics Societies
270
The Effects of Advancing Civilization Upon PlantsWm Crocker
277
A Study of an Attempt at Uniformity in Grading StudentsElliot R Downing
290
An Experiment Both Interesting and Instructive
299
Agriculture in the High SchoolCarl F Knirk 206
311
Errors in MathematicsG A Miller 2
320
An Exercise in Laboratory AstronomyJ E Gould
327
Making High School Physics RealF F Good
343
History of the Biological Science Section of the Central AssociationOtis
350
School Social Centers
359
253
361
The Passing of the Teleological ExplanationEdgar X Transeau
369
Large Coal Mines
381
The BananaA Fruit in a Sterile Package
391
Swiss Schools
399
Is the Cigaret the Culprit
410

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Oblíbené pasáže

Strana 394 - The formula states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the base and altitude.
Strana 429 - Man can no more be scientifically studied apart from the ground which he tills, or the lands over which he travels, or the seas over which he trades, than polar bear or desert cactus can be understood apart from its habitat.
Strana 264 - ... The following points should be observed: The sand should be nearly white in color; it should be of medium fineness (passing a 20 to 50 mesh horizontal sieve); the grains should be uniform in size, even, and angular, or, less preferably, they may be rounded. A simple chemical test may be employed by heating the sand in a dilute acid. Effervescence indicates the presence of lime; loss of color shows the presence of clay impurities. Iron in the most minute quantity may be detected by dissolving...
Strana 182 - MATHEMATICS. Remittances should be made by Post Office Money Order, Express Order, or Bank Draft. If personal checks are sent, please add ten cents for collection. SCHOOL SCIENCE AND MATHEMATICS is the "official organ" of the following associations and is sent free to all members who have paid their dues.
Strana 319 - This is no denial of the mathematical proposition that the whole is equal to the sum of all its parts...
Strana 264 - Clay materials are objectionable because they cloud the glass. Washing helps to remove them, since they occur usually in a very finely divided state. Magnesia, which is more apt to be introduced into glass materials through limestone than through sand, is troublesome because it renders the batch less fusible.
Strana 367 - GINN AND COMPANY Publishers BOSTON ATLANTA NEW YORK DALLAS CHICAGO COLUMBUS LONDON SAN FRANCISCO Day— A History of Commerce.
Strana 372 - It is quite certain that we cannot become sufficiently acquainted with organized creatures and their hidden potentialities by aid of purely mechanical natural principles, much less can we explain them ; and this is so certain, that we may boldly assert that it is absurd for man even to conceive such an idea, or to hope that a Newton may one day arise even to make the production of a blade of grass comprehensible, according to natural laws ordained by no intention ; such an insight we must absolutely...
Strana 327 - German astronomer discovered 3 laws of planetary motion (1 ) The orbit of each planet is an ellipse with the Sun at one of the foci...
Strana 540 - Heck, WH A second study of mental fatigue in relation to the daily school program.

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