Mathematical construction, informal number work for busy hands; grades one and two (1911)
Laffin, Nora Louise, b. 1878 · Chicago : A. Flanagan Company · leaf 94
ight edge and make mark li.Draw the line. Fold so that lower edge touchesupper edge. Open. (Fig. 2). Fold so that left edge touches linec-d. Open. Fold so that right edge touches linea-h. Open. Cut from e to fold. Cut from / to fold. Fold so that point g touches h. Fold so that point i touches k.… … Fold so that line a (Fig. 3)touches line h. Fold so that line d (Fig. 3)touches line c. Eesult: Fig. 4. Fold under the little triangles 1, 2, 3,4 and paste. Result: A stamp holderwith two pockets. Close it by makinglower edge touch upper one. 88 MATHEMATICAL CONSTRUCTION LESSON VITravelers Pocket…
Manual training · Paper work
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