## Changes in the content of elementary algebra: since the beginning of the high school movement as revealed by the textbooks of the period |

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addition and subtraction beginning in 1910 binomial theorem cent appeared CENT OF EXERCISES complicated exercises decade beginning decade from 1830 decade to decade Elementary Algebra entire period equations and formulas exercises in addition exercises in division exercises in equations exercises in factoring exercises in fractions exercises in graphs exercises in multiplication exercises in parentheses exercises in proportions exercises in roots exercises on theory FIFTH FIFTH FIFTH geometric progression High School highest common factor Increase or Decrease largest percentage last fifth lowest common multiple Mathematics Maximum or highest mean number Minimum or lowest Minimum percentage negative exponents nineteenth century nineties number of exercises percentage decreased percentage of exercises percentage of increase percentage of simple Ph.D present century present decade Professor of Mathematics proportions and progressions Read table Represents exercises respective books roots and radicals second fifth Simple and Complicated table as follows tendency third fifth tool exercises topics verbal exercises