Mathematical construction, informal number work for busy hands; grades one and two (1911)
Laffin, Nora Louise, 1878- · Chicago, A. Flanagan Company · leaf 64
colors, any size that is largeenough. Fold the one to be used for strips into 2 equal oblongs.Divide one of these into 2 smaller oblongs. Divide one ofthese 2 small ones into two equal smaller oblongs. Cut. Fold the other square into 4 equal oblongs. Fold the 2 free edges back to oppo-site folded… … 58 MATHEMATICAL CONSTEUCTION LESSON XI Two squares, contrasting colors. Cut the square to be used as strips into 4 equal oblongs.Bisect two of these lengthwise and then divide 2 of the nar-row oblongs thus obtained into 2 equal smaller ones. Fold the other square into 8 equaloblongs. Open and fold…
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