Zero The Clown

Learning math with Zero, a tricky clown. Page 82 in Study Arithmetics, Grade Three, by F.B. Knight, G.M. Ruch, J.W. Studebaker, W.C. Findley, and William S. Gray; published by Scott, Foresman and Company, last copyright date 1943. (See my article on on old school books and primers.)

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