Mathematics Teacher (1932) Vol. 25, No. 3
I I THE MATHEMATICS TEACHER The Official Journal of The National Council of T eachers of Mathematics Incorporated 1928 MARCH 1 9 3 2 Contents Mastery of Certain Mathematical Concepts by Pupils at the J unior High School Level. ... .................. Charles Henry Butler CHAPTER I. Introduction . . . . . . . . . . . .
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