Mathematical construction, informal number work for busy hands; grades one and two (1911)
Laffin, Nora Louise, b. 1878 · Chicago : A. Flanagan Company · leaf 127
LESSON XXXIICradle—Rulers : 1954. Materials: 2 sheets of stiff paper 10xl6. 1 sheet ofstiff paper 12 square. Use one sheet of the paper, 10x6, first. In estimating length, get new relations:9 51 4 10 1 10 120 MATHEMATICAL CONSTKUCTION … Tl^l Measure on upper and loweredges, from left edge with 9-inchruler; make marks and draw linea-h. Eepeat with 1-inch ruler, anddraw line c-d. Measure on leftand right edges from upper edgewith 5-inch ruler; make marks anddraw line e-f. Eepeat with 1-inchruler and draw line g-h. Makecuts indicated…
Manual training · Paper work
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