The Teaching of Arithmetic: A Manual for Teachers, a Textbook for Teacher-training SchoolsRow, Peterson, 1924 - 391 σελίδες |
Συχνά εμφανιζόμενοι όροι και φράσεις
ability accuracy addition amount arith Ask the pupils avoirdupois bank cent child column common fractions Company computation correct cost courses of study Courtis decimal fractions decimal point determine developed difficulty digits divide dividend division divisor drill E. L. Thorndike Educational Psychology Elementary School emphasis equal errors example expressed factors fractional units fundamental operations gain given grades graph greatest common divisor habits inaccuracy inches integers interest Journal of Educational learned list price marbles marked price materials mathematics measure metric system multiply number of units percentage practice problems involving processes Psychology quotient rectangle result Roman numerals scales scores selling price short method simple situations solution solve square root standard subtraction SUGGESTED READINGS tables taught taxes teacher teaching Tests in Arithmetic textbooks topics unit fractions whole numbers York City zero
Δημοφιλή αποσπάσματα
Σελίδα 376 - When a man's knowledge is not in order, the more of it he has the greater will be his confusion of thought.
Σελίδα 246 - When the length of the primary unit of this system was determined it was supposed to be one ten-millionth of the distance from the equator to the pole.
Σελίδα 151 - The first fact which asserts itself in observing objective teaching is the artificiality of the materials employed. Primary children count, add, etc., with things they will never be concerned with in life. Lentils, sticks, tablets and the like are the stock objective stuff of the schools, and to a considerable degree this will always be the case. Cheap and convenient material suitable for individual manipulation on the top of a school desk is not plentiful. But instances where better and more normal...
Σελίδα 187 - To multiply by 10, move the decimal point one place to the right, annexing a zero if necessary.
Σελίδα 214 - Multiplying or dividing both terms of a fraction by the same number does not change the value of the fraction.
Σελίδα 95 - ... from freezing to boiling. The presence of impurities increases these values somewhat. Thus ocean water may ordinarily be taken as weighing 64.0 Ib. per cu. ft. In the computations in this book it will be sufficient to take w = 62.4 Ib. per cu. ft. 6. Accuracy of Computations. — No computed result can be more accurate than the data upon which it is based and it is therefore not only useless but also misleading to carry out results to more significant figures than the data warrant. It should...
Σελίδα 193 - To divide by 10, move the decimal point one place to the left. To divide by 100, move the decimal. point two places to the left, and so on for other powers of 10.
Σελίδα 339 - The area of a rectangle is found by multiplying the number of units in the length by the number of like units in the width.
Σελίδα 228 - Divide as in whole numbers, and mark off in the quotient a number of decimal places equal to the excess of the number of decimal places in the dividend over the number of decimal places in the divisor ; if there are not figures sufficient, prefix cyphers as in Multiplication.
Σελίδα 336 - An Equilateral Triangle has all its sides equal. An Isosceles Triangle has two of its sides equal A Scalene Triangle has all its sides unequal.