Pre-service teachers' difficulties with the semiotic representation of the decimal number line - Université de Paris - Faculté des Sciences Access content directly
Conference Papers Year : 2023

Pre-service teachers' difficulties with the semiotic representation of the decimal number line

Abstract

As a semiotic representation, the numerical line is often used in school as a tool. However, it is also considered an epistemological obstacle, which can be problematic if one is not trained to use it. In this paper, we investigate the difficulties encountered by primary and secondary pre-service teachers in representing the number line of decimal numbers when numbers are given. Using a methodology with qualitative analyses, we analysed the written productions of 103 pre-service teachers when constructing these number lines. This allowed us to identify five categories of difficulties: error in the decimal writing of 1/2, just ordering the numbers, no clearly defined unit, 1/2 in the middle of the segment, and difficulties with 1/100 and 5/100.
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Dates and versions

hal-04102100 , version 1 (22-05-2023)
hal-04102100 , version 2 (13-01-2024)

Identifiers

  • HAL Id : hal-04102100 , version 1

Cite

Macarena Flores González, Elann Lesnes. Pre-service teachers' difficulties with the semiotic representation of the decimal number line. 13th Congress of the European Society for Research in Mathematics Education, Alfréd Rényi Institute of Mathematics; Eötvös Loránd University, Jul 2023, Budapest, Hungary. ⟨hal-04102100v1⟩
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