00953nam a2200241Ia 450000100060000000300050000600500170001100800410002801000150006903500200008404000230010405000260012708200110015311000980016424500600026226000670032230000290038949000770041850400290049565000430052470000670056781000770063484609BIBL20160527203609.0720224s1951    ilu      b    000 0 eng    a 51009871   a(OCoLC)00249408  aDLCcWSUdSERdOCL0 aLB5b.N25 50th, pt. 2  a370.6220aNational Society for the Study of Education.bCommittee on the Teaching of Arithmetic.2Local14aThe teaching of arithmetic.cEdited by Nelson B. Henry.0 aChicagobDistributed by the University of Chicago Pressc1951.  axii, 308, lxx p.c23 cm.1 aYearbook of the National Society for the Study of Education, 50th, pt. 2  aIncludes bibliographies. 0aArithmeticxStudy and teaching.2Local10aHenry, Nelson B.q(Nelson Bollinger)db. 1883.eed.w1n2Local2 aNational Society for the the Study of Education.tYearbookv50th, pt. 2.