Excerpt from Manual of Object-Teaching: With Illustrative Lessons in Methods and the Science of Education Knowing that which is needful to be learned is a great attainment. Knowing what should be taught, and how to teach it, is a high art. To secure this necessary attainment is the first duty of every teacher. To master the high art is like unto the first duty in its importance; it enhances the value of the attainment in knowledge, and insures success in the great work of education. It is strangely curious that the doing of the same thing may be both easy and difficult - easy when done in the right way, difficult when done in the wrong way. Success attends the doing in the right way; failure is certain to follow the doing in the wrong way. This is eminently true of teaching. Therefore, to determine what is the proper way becomes a question of great moment to every earnest teacher; for on the correctness of this decision depends the results of the teaching and the welfare of the pupils. A person may compare the results of one period of his work with those of another period, and thus note his own growth and progress in that work; but no person can measure himself by himself, alone, and thus determine his actual ability. No teacher can measure his own work by itself, and thus determine its true quality. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.