Third Book William E. Chancellor

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William E. Chancellor - «Third Book»

О книге

Excerpt from Third Book: Fourth Year Intermediate Principles

This book is for boys and girls who can use numbers into the thousands in addition and subtraction, who know what ratio is and understand something about fractions, who know some facts of measures, and who have studied the multiplication tables. For these boys and girls there is here about a year's work, chiefly in practice, partly in extension of knowledge.

The new topics introduced here are direct outgrowths of earlier topics, and are presented in their simplest forms and relations. Ratio develops into proportion, and proportion into equation. The common fraction is correlated with percentage, with the decimal, and with ratio and proportion. Factoring is centered upon dividing, and cancellation is centered upon both. The method of long division is explained. A few pages are devoted to each of two topics, greatest common divisor and least common multiple. But the emphasis of the book is upon the fundamental operations of addition and subtraction, multiplication and division for drill, and upon fractions and measures for development of arithmetical knowledge and skill.

This book is more nearly topical in arrangement than either of the two earlier books of this Series; but an essentially spiral character is secured by frequent reviews. Subjects are not exhausted before we pass to new subjects or return to old subjects displayed in new matter.

It is sound child-psychology to believe that boys and girls in fourth, fifth, and sixth grades have singular power and even pleasure in undergoing the exercises of drill in any and every subject.

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Полное название книги William E. Chancellor Third Book
Автор William E. Chancellor
Ключевые слова математика, общие вопросы математики
Категории Образование и наука, Математика
ISBN 9781330191248
Издательство Книга по Требованию
Год 2015
Название транслитом third-book-william-e-chancellor
Название с ошибочной раскладкой third book william e. chancellor