They are spoken pleasantly, but still in the tone of command.
"The class may rise.
"All those that are not fully prepared with this lesson may sit." A number sit; and others, doubtful whether they are prepared or not, or thinking that there is something peculiar in their cases, which they wish to state, raise their hands, or make any other signal which is customary to indicate a wish to speak.

Such a signal ought always to be agreed upon, and understood in school.
The teacher shakes his head, saying, "I will hear you presently.

If there is, on any account whatever, any doubt whether you are prepared, you must sit.
"Those that are standing may read their answers to No.1.Unit figure ?" _Boys._ "Five." _Teacher._ "Tens ?" _B._ "Six." _T._ "Hundreds ?" _B._ "Seven." While these numbers are thus reading, the teacher looks at the boys, and can easily see whether any are not reading their own answers, but only following the rest.

If they have been trained to speak exactly together, his ear will also at once detect any erroneous answer which any one may give.

He takes down the figures given by the majority on his own slate, and reads them aloud.
"This is the answer obtained by the majority; it is undoubtedly right.
Those who have different answers may sit." These directions, if understood and obeyed, would divide the class evidently into two portions.