Characterizing the growth of one student’s mathematical understanding in a multi-representational learning environment
Introduction
An important idea in mathematics education is creating teaching and learning environments that allow students to learn mathematics with understanding (Carpenter & Lehrer, 1999). The mathematics education community suggests that one way to provide learning environments that support mathematical understanding is to promote the effective use of multiple representations of mathematical ideas. Including multiple representations in instructional environments to help students develop a deep understanding of mathematics has been highly recommended in the literature (see Ainsworth, Bibby, & Wood, 1998; Gagatsis & Shiakalli, 2004; Kaput, 1998; Lesh, Post, & Behr, 1987; Ng & Lee, 2009). The fundamental idea behind the encouragement of dealing with multiple representations is that each representation emphasizes some parts of the mathematical object by ignoring the others and students may develop a stronger understanding of these objects by taking advantage of the knowledge each representation offers (Ainsworth, 1999). In this way, students construct connections among representations of a mathematical concept in order to gain the objectified/embodied and generalized mathematical knowledge of that concept (Goldin, 1987; Hiebert, 1988).
However connecting multiple representations offered in mathematical learning environments is not an easy task for students (Ainsworth et al., 1998). Research emphasizes that students only take advantage of the benefits of a multi-representational approach if they can construct the links among different representations (Dreher & Kuntze, 2015; Renkl, Berthold, Große, & Schwonke, 2013). Teachers’ use of multiple representations during instruction are not magic by itself; it is the students’ sense making and reasoning activities that is important while they are studying mathematical tasks that involve different representations (Flores, Koontz, Inan, & Alagic, 2015). The aforementioned recent studies state that there is a need for greater clarification on how a learning environment, enriched with multiple representations of related concepts, can lead to students’ mathematical understanding. We focus on this issue by characterizing one 10th-grade student’s growth of mathematical understanding about one of the important geometric transformations, dilation, in an environment where multiple representations were used to support growth.
Section snippets
The registers of semiotic representation
Duval’s theory of registers of semiotic representation highlights that there is no other way to access mathematical objects than to use their semiotic representations (Duval, 2006). He describes the role of semiotic representations in mathematical activity as “paramount” because “mathematical processing always involves substituting some semiotic representation for another” (Duval, 2006, pp. 106-107). According to the theory, one needs to interpret and deal with semiotic representations of a
Methods
The case study reported in this paper was part of a larger data set from the first author’s dissertation (Gulkilik, 2013) examining students’ growth of mathematical understanding about transformations.
Results
The results are organized to present our interpretation of Elif’s mathematical understanding about dilation. Based on the data from Elif’s interactions with the topic of dilation, we identified Elif’s Pirie-Kieren levels and use of representations during each of her mathematical interactions using multiple data sources. As a way to provide a basic summary of Elif’s Pirie-Kieren levels and use of representations with the topic of dilation, we created the visual model in Fig. 31
Discussion
The purpose of this study was to characterize the growth of one student’s mathematical understanding and use of different representations about dilation. Here we discuss the results as they relate to the use of the Pirie-Kieren model and the Semiotic Representation Theory as a lens.
Conclusion
This study characterized the growth of Elif’s mathematical understanding about the concept of dilation using the Pirie Kieren model with Duval’s Semiotic Representation Theory as a lens for interpretation. Although it is a brief glimpse into one student’s mathematical growth, it shows important ideas about how mathematical concepts may develop over time. The examples of Elif’s engagement with different representations of dilation help to show how the interactions with these representations
Funding
This study was supported by Gazi University Projects of Scientific Investigation, Project Number: 04/2011-38.
CRediT authorship contribution statement
Hilal Gulkilik: Conceptualization, Methodology, Software, Visualization, Writing - original draft. Patricia S. Moyer-Packenham: Conceptualization, Writing - review & editing, Visualization. Hasan Huseyin Ugurlu: Supervision, Investigation. Nejla Yuruk: Supervision, Methodology, Investigation.
Acknowledgements
We would like to thank anonymous reviewers for their insightful comments and suggestions. An earlier version of this article was presented at 13th International Congress on Mathematical Education in Hamburg, 2016.
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