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(Definition of a Fraction)
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(Equal Division of a Segment by Ruler and Compass)
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(Equivalent Fractions \(Cancellation Law\))
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(Fraction as Division)
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(Ordering Fractions \(the Cross-Multiplication Algorithm\))
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(Addition and Subtraction of Fractions)
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(Multiplication of Fractions)
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(Formula for the product, and first consequences)
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(The first alternative approach)
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(The second alternative approach)
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(Division of Fractions)
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(Complex Fractions)
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(``Of" and Percent)
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(Ratio, Rates, and the Fundamental Assumption of School Mathematics \(FASM\))
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(Word Problems)
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(APPENDIX: Some Remarks on the Teaching of Fractions in Elementary School)
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