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Wilhelmi, Miguel R.

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https://academica-e.unavarra.es/handle/2454/50180

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Wilhelmi

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Miguel R.

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Estadƭstica, InformƔtica y MatemƔticas

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0000-0002-6714-7184

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Author: Abaurrea Larrayoz, Jaione Ɨ Subject: Algebraization levels Ɨ

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    Let's tie circumferences up, so we count them all: an unconventional combinatorics problem in compulsory secondary school
    (South Florida Publishing LLA, 2022) Lasa Oyarbide, Aitzol; Wilhelmi, Miguel R.; Abaurrea Larrayoz, Jaione; Estadƭstica, InformƔtica y MatemƔticas; Estatistika, Informatika eta Matematika
    Secondary school students (age 13-14) solve a combinatorial task in the Mathematical Olympiad, whoseanswers are analyzed and discussed using theoretical tools from two didactical frameworks:on one hand, the Onto-semiotic Approach (OSA), and, on the one hand,the Theory of Didactic Situations in Mathematics(TDSM). The statistical study is carried out by tools from Statistical Implicative Analysis (SIA).Results express that most participants possess sufficient arithmetic strategies to solve the task, without turning to combinatorial algebra. At the same time, the algebraization level shown by these same participants in their answers to other tasks of the Olympiad, is strongly correlated to their behaviorsin the combinatorial task, and so, a student who masters an algebraic technique is also aware of the limitations of its field of application.Therefore, adaptability is a key element in the analysis of the observed strategies and their success rate.