Mathematical construction, informal number work for busy hands; grades one and two (1911)
Laffin, Nora Louise, 1878- · Chicago, A. Flanagan Company · leaf 38
Surfaces Seen While Making EnvelopeDraw them enlarged on blackboard. … 32 MATHEMATICAL CONSTEUCTION Base problems on some of these comparisons A=2 of B. G =8 of E. =2 of G. =4 of D. =8 of D. =i of A. =8 of H. K=2 Hs. C=3 of D. =F-D. =6 of E. =6 of J. =3 of H. =sum of H, D, E, J. =sum of K, E, J. E=J of D. =i of C.=i of F.=i of K. B=sum of C+D. D=i of F.=H. G=B. =2 of…
Manual training · Paper work
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