Fig. 24.—Detail of stairway.
The Stairway.—In a two-story house the hardest problem will usually be the stairs. Some good work in number may be done while finding out how many steps will be needed and where the stairway must begin in order to reach the second floor in comfort. Even quite small children can deal with this problem if presented in a simple way. For example, if the box or room is ten inches high, how many steps 1 in. wide and 1 in. high will be needed, and how far out into the room will they come? The children can work out the plan on the blackboard. Measurements may be modified to suit the ability of the class and the needs of the room.
The variety of possible constructions in building the staircase corresponds to the varying ability of classes. A strip of paper may be folded back and forth and made to serve with least mature classes. This paper stair will sag unless it rests on a board or piece of stiff pasteboard. A substantial stairway may be made by sawing two thin boards for supports, as in [Fig. 24], and nailing on steps of thin wood or cardboard. There is usually one boy in every first grade who is capable of as difficult a piece of handwork as this. He is apt, also, to be the boy who takes least interest in the general work of the class, and often it is possible to arouse him to special effort through some such problem. The stairway may be made of heavy cardboard with a construction similar to that just described, but this requires pasting instead of nailing and is much more difficult for little children.
The Roof.—The making of the roof is another part of the house building which may often be given into the special care of the two or three over-age pupils who need special problems. The plan which they evolve from their study of the needs of the case will usually be of greater value to them, even though it may not be the best that could be suggested.
The roof may be made of wood as a base, with either wood or cardboard shingles tacked on in proper fashion; or it may be made of cardboard with the shingles merely indicated by lines made with crayon. If the wood base is used, wood gables may be made for sides or ends of the house. To these, long boards may be nailed to form a solid roof. Shingles two inches long by about one inch wide may be cut from cardboard or very thin wood and tacked to the boards. The children should be spurred to study the roofs of houses and find out how the shingles are arranged, and discover for themselves, if possible, the secret of successful shingling.
Fig. 25.—Box house, showing roof. Built by summer class, Teachers College, New York.