Construction work in cardboard and paper for grades I to IV, without the use of tools; with a course in woodwork for the fifth grade . 38 NAM i 1 •i i i . ! »« ? : ; ; • 1 11 1 1 [ 1 \ , L 5ZN. /- 40 +1 PAPER WORK. Materials.—Nos. 25 and 26. The same construction as in the preceding exercisemay be applied to the construction of the different kindsof rectangular parallelopipeds. It is only necessary togive to the middle row of squares a width or a length oftwo or any number of squares, according to the form ofthe four-sided figure which we wish to obtain (Figs. 38,39, 4o, and 41). Observe that
Construction work in cardboard and paper for grades I to IV, without the use of tools; with a course in woodwork for the fifth grade . 38 NAM i 1 •i i i . ! »« ? : ; ; • 1 11 1 1 [ 1 \ , L 5ZN. /- 40 +1 PAPER WORK. Materials.—Nos. 25 and 26. The same construction as in the preceding exercisemay be applied to the construction of the different kindsof rectangular parallelopipeds. It is only necessary togive to the middle row of squares a width or a length oftwo or any number of squares, according to the form ofthe four-sided figure which we wish to obtain (Figs. 38,39, 4o, and 41). Observe that with any rectangle you can always obtaintwo kinds of parallelopipeds, according to the length orwidth of paper which you use, and that it is only in caseswhere your dimensions are fixed that you are obliged totear off any excess of paper. These constructions maybe made stronger and new combinations formed, bypassing a band of stiff paper or thin cardboard throughthe diagonals. These bands permit ^the building up of along series of drawing models, the appearance of whichmay be changed in a moment (Fig. 42). Fig. 42. Cube with a band of strong paper, forked atone end, passed through its
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicagoaflanaganco
