The "Old-School-Learning" series is bringing back the old school way of learning. Each book is a facsimile or reproduction of a school textbook or instructional book from a time period when education was simple and highly effective.
Preface (from the original book): Teachers will observe that only a few letters at a time are given to the pupil, and with them words formed of those few letters. Thus the alphabet as presented to a child in detached portions, and each successive portion practically used in words before the next is learned.