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agriculture algebra American angle application Association become boys called carried cent chemistry Chicago City Cleveland College committee common construction copy course direction discussion divisible draw effect electric elementary equal equation errors experience fact field figures force geometry girls give given heat High School idea illustrations important industrial instruction interest laboratory less light material Mathematics matter means meeting method Michigan natural needs obtained organization period physics plants possible practical preparation present principles problems Professor Proposed pupils question relation SCIENCE AND MATHEMATICS scientific side similar solution student teacher teaching theory things tion triangle United University various York
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 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...