No clearness of knowledge may be expected unless the teacher knows clearly at the start just what it is that he expects the scholars to know; and the building grows with double certainty if the little workmen themselves are given glimpses of the architect's plans,--at least of a "front elevation." "For these three months," the teacher may say, "we are to study Christ's life as Mark records it. My plan is for you to vote each Sunday on the most important facts we have studied,--either in the lesson text or in the 'intervening events.' Sometimes it will be one fact; it will never be more than three. All together there are thirty facts we shall learn, and they will make an outline history of Christ's entire life." How such a scheme, clearly and often stated, will clarify and systematize the quarter's work! Three or four times during the three months the teacher will propound brisk questions covering the points of all the previous lessons of the quarter, following this by a written test. Let him prepare for each lesson a card, on which he prints questions answerable by the facts to be learned. Fastening twelve hooks on a board, he hangs these cards on the hooks week by week, and uses them in these reviews and in the final review of the quarter. If the class is one of little tots, a symbol for each lesson, cut out of pasteboard or consisting of some object, may be hung up in place of the card,--such a symbol as a needle stuck in a piece of cloth, answering to the story of Dorcas. Some such preparation will make thoroughly successful a written examination on review day. The questions should be simple and clear, and such as can be answered fully in a very few words. They should take up only the points on which emphasis has been laid throughout the quarter. If the teacher presents the plan in a jolly way, the class will enter into it heartily, as good fun. For a change, now and then invite the scholars to bring in, on review day, lists of what each considers the ten principal events of the quarter. A comparison is to be made, and the events that receive the most votes will constitute a model list. This exercise in itself will make a pretty good review. An excellent review may be based upon the six natural divisions of all lessons,--times, persons, places, events, sayings, teachings. The "sayings" are the short sentences best worth memorizing. A review "quiz" may take up these six points one after the other, carrying each over the entire range of lessons, sometimes chronologically, but more often at haphazard.