Mathematics Teacher (1933) Vol. 26, No. 7
I I THE MATHEMATICS TEACHER The Official Journal of The National Council of Teachers of Mathematic. Incorporated 1928 NOVEMBER 1933 Contents Mathematics for the Slow Moving Pupil .......... Virgil S. Mallory 391 Proofs of Sin (A +B) and Cos (A+B) ........... .Joseph A. Nyberg 399 Central Objectives of the Educational
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