Worst, Edward F. (Edward Francis), 1866-1949, Barber, Harriette, [from old catalog] joint author, Seymour, Marian, [from old catalog] joint author · Chicago, A. W. Mumford and company · leaf 19
How many more has thesquare? 15 Unfold the paper. What part of the square is eachtriangle? Hold paper by corners at ends of crease. Fold these corners together. Unfold. How many tri-angles are there now? How many times the number oftriangles there were before? What part of the square iseach… … \ \ \ ,_ ,,. XJ( \^ 7. \ •
Manual training · Paper work · Basket making
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