Mathematical construction, informal number work for busy hands; grades one and two (1911)
Laffin, Nora Louise, 1878- · Chicago, A. Flanagan Company · leaf 55
Like a cubewith two sidescut out. 48 MATHEMATICAL CONSTRUCTION LESSON XIX Box shape; 9 squares; straight cuts. When bottom rowis cut off number relation is 1 to 3. When right row is cut off numberrelation is 1 to 3. Make cuts a b. Fold back 2, 3, and 1.The sum of 2 and 3 can be cut how manytimes… … LESSON XX • \\ •• * £ - - X \\ i • 1 k y 1 __ J
Manual training · Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
