tion of real objects. Pestalozzi's diminishing influence roughly coincided with the rapid expansion of the cities. By the 1880s the United States was absorbing several million immigrants a year, a human flood that created new problems for the common school. The question confronting educators was how to impart the largest amount of information to the greatest number of children in the shortest possible time. This new, more practical goal of educators and the means through which they attained it were reflected in the new schools they built and in the new teaching practices they adopted. Out of necessity, the one-room common school was replaced by larger schools. To make it easier and faster for one teacher to instruct many students, there had to be as few differences between the children as possible. Since the most conspicuous difference was age, children were grouped on this basis, and each group had a separate room. To discourage physical activity that might disrupt discipline and interrupt the teaching process, to encourage close attention to and absorption of the teacher's words, and to increase eye contact, the seats were arranged in formal rows. For good measure, they frequently were bolted to the floor. It is not surprising, at about this time, when the goal of education was to expedite the transfer of information to a large number of students, that the normal schools began to fall under the influence of Johann Friedrich Herbart (1776-1841). For him, education was neither the training of faculties that exist ready-made in the mind nor a natural unfolding from within. Education was instruction literally a building into the mind from the outside. The building blocks were the materials of instruction the subject matter. The builder was the teacher. The job of the teacher was to form the child's mind by building into it the knowledge of man's cultural heritage through the teaching of such subjects as literature, history, science, and m...