The three lectures presented in the following pages were delivered before an audience of parents and others interested in the University Elementary School, in the month of April of the year 1899. Mr. Dewey revised them in part from a stenographic report, and unimportant changes and the slight adaptations necessary for the press have been made in his absence. The lectures retain therefore the unstudied character as well as the power of the spoken word. As they imply more or less familiarity with the work of the Elementary School, Mr. Dewey's supplementary statement of this has been added. This edition affords a grateful opportunity for recalling that this little book is a sign of the coöperating thoughts and sympathies of many persons. Its indebtedness to Mrs. Emmons Blaine is partly indicated in the dedication. From my friends, Mr. and Mrs. George Herbert Mead, came that interest, unflagging attention to detail, and artistic taste which, in my absence, remade colloquial remarks until they were fit to print, and then saw the results through the press with the present attractive result—a mode of authorship made easy, which I recommend to others fortunate enough to possess such friends. It would be an extended paragraph which should list all the friends whose timely and persisting generosity has made possible the school which inspired and defined the ideas of these pages. These friends, I am sure, would be the first to recognize the peculiar appropriateness of especial mention of the names of Mrs. Charles R. Crane and Mrs. William R. Linn. And the school itself in its educational work is a joint undertaking. Many have engaged in shaping it. The clear and experienced intelligence of my wife is wrought everywhere into its IItexture. The wisdom, tact and devotion of its instructors have brought about a transformation of its original amorphous plans into articulate form and substance with life and movement of their own.