01115cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001800092040007700110050002300187051001700210100003600227245007000263260016300333300003300496440006100529500001600590500008400606504003000690650004800720650004900768650003200817hew66000030 DLC20260227111514.0721229s1965    dcua     b   f000 0 eng c  ahew66000030   a(OCoLC)526291  aU.S. Dept. of Health, Education, and Welfare. LibrarycODaWUdOCoLCdDLC00aL111b.A72 no. 784  aQA135.5b.S61 aSpross, Patricia McNitt,d1913-10aElementary arithmetic and learning aids /cby Patricia M. Spross.  aWashington :bU.S. Dept. of Health, Education, and Welfare, Office of Education ; [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.,c1965.  avi, 134 p. :bill. ;c26 cm. 0aCircular (United States. Office of Education) ;vno. 784  a"OE-29063."  aL111.A72 no. 784 bound with Circular no. 785-no. 789 subsequent to publication.  aBibliography: p. 129-134. 0aArithmeticxStudy and teaching (Elementary) 0aMathematicsxStudy and teaching (Elementary) 0aTeachingxAids and devices.