“... the precepts of a naturalistic or field research, and the analysis of results, a qualitative and quantitative...”
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“.... The research was carried out into two groups, both coursing the third grade of a public school in São Paulo...”
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“... the trigonometric ratios sine, cosine and tangent from the manipulation of models. We had, as the research...”
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“... out an interventionist study for the introduction of the Fundamental Theorem of Arithmetic (FTA...”
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“... (1992) and Tall & Vinner (1981). The research methodological approach is qualitative, making use...”
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“... was to do an interventionist study for the introduction of the fraction concept to 2nd graders. The study...”
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