“It’s just to replace this [x] with something”: Secondary-school Students’ Grappling with Algebraic Problems
Author(s):
Birgit Gustafsson (presenting / submitting) Lisbeth Åberg-Bengtsson (presenting)
Conference:
ECER 2011
Format:
Paper

Session Information

24 SES 12, Algebra in the Mathematics Classroom

Paper Session

Time:
2011-09-16
08:30-10:00
Room:
JK 28/130,G, 37
Chair:

Contribution

The present study is one part of a larger research project dealing with the teaching and learning of mathematics in the latter part of the Swedish compulsory education and the first year of upper secondary school. The focus of the project as such is upon classroom communication with respect to teacher-student interaction on the one hand and students’ interpretation and understanding of the learning content on the other. The mathematical domain that is studied is algebra, and both mathematical concepts, which are new to the students, and concepts, which students are already familiar with, are of interest. It is frequently argued that algebra is an abstract and problematic area (e.g., Olteanu, 2007; Kieran, 1992; The Swedish National Agency for Education, 1999), which most students have not encountered in primary education in any formal sense, and which contains a body of new mathematical concepts. Thus, the teaching and learning of this particular area is an urgent domain for research on mathematics education.

The aim of the present part study is to investigate students’ problem solving strategies when dealing with an algebraic learning content.

Research questions: 

• What kind of understanding of algebraic concepts can be found in students’ solutions? 

• How can classroom interaction and teachers’ scaffolding strategies be traced in students’ solving of algebraic problems?

To answer these questions an overall sociocultural perspective is adopted. Consequently, language is a prerequisite for the individual’s thinking and communication with others, and thus also has a crucial and fundamental role in all learning (Dysthe, 2003). Advocates of sociocultural perspectives tend to build upon, in one way or another, a Vygotskian mode of reasoning about teaching, learning and cognitive development. Vygotsky (1978, 1986) took a historical and cultural perspective on learning as well as on how learning can be scaffolded by artifacts such as sign and sign systems. We humans are tool producing and tool using beings. Tools (both physical and mental) are artifacts that we use to mediate knowledge. Vygotsky (1978) argued that the use of tools directly develops higher mental functions such as thinking and meaning making. In addition, Vygotsky (1978) argued that learning takes place twice. First we learn on the inter-personal level in interaction with others in social contexts, then on the intrapersonal level when what is learnt is transformed to internal psychological functions.

The present study deals with learning related to classroom situations involving both the use of artifacts and interpersonal interactions.

Even though the research presented here is conducted in Swedish schools only, the questions raised certainly have a broader scope, since they deal with issues related to research carried out in many other countries (Niss, & Jensen, 2002). Problems with algebra are not an issue for Sweden or the Nordic countries only. Thus, our research should certainly be of interest not only elsewhere in Europe but also in at least the rest of the western world, where countries have quite similar school cultures.

Method

Students in ten Swedish classes, from the last two years of compulsory education and the first year of upper secondary education, and their seven teachers participated in the project. Some different data-collecting strategies were adopted. For the present study, fourteen classroom observations were conducted followed by observations of groups of students when they solved algebraic problems. All these sessions were video- and audio-recorded. The lessons which preceded the problem solving situations were to some extent based on the teachers’ introductions, but the students mainly worked with the textbook. In this work, they solved routine tasks individually or collectively, and sometimes, in a subsequent step, they worked with problem solving. From a mathematical didactic perspective, tasks labelled “problem solving” are somewhat more complex than routine tasks. The former tasks require an understanding of what to do, and usually the students have to make calculations in several steps to reach a solution. “A problem” is, from this perspective, a task you initially have no way to solve (Skott, Hansen, Jess, & Schou, 2010). In the present study, students solved these tasks in groups, and it was possible to study their ways of reasoning.

Expected Outcomes

Preliminary results show that students in many cases do not use adequate mathematical concepts. To what extent this may be an obstacle in their problem solving is an issue still under analysis. However, tentatively, we venture to say that the fact that many groups did not articulate and write down a formal equation, hindered them, to some extent, from finding a proper solution. For example, strategies to keep figures and reasoning in mind led students to trial- and-error attempts to find x instead of mathematical reasoning characterized by writing down the algebraic expression and thus solving the problem. It has previously been argued that the transition from arithmetic to algebra can result in a number of difficulties related to ensuring an algebraic equation or expression as an object with a given structure (Herscvics, 1989; Sfard, & Linchevski, 1994). Several studies show that it is more common for students to focus on the use of everyday experience than on the use of mathematical reasoning and accuracy (see e.g., Lithner, 2000). In addition, some of our tentative results come close to previous research (e.g. Knuth, Stephens, McNeil, & Alibal, 2006) which found that students lack in their understanding of the equal sign.

References

Dysthe, O. (2003). Dialog, samtal och lärande [Dialogue, conversation and learning]. Lund, Sweden: Studentlitteratur. Herscovics, N. (1989). Cognitive obstacles encountered in the learning of algebra. In S. Wagner & C. Kieran (eds.), Research issues in the learning and teaching of algebra (pp. 60-86). Reston, VA: NCTM. Kieran, C., (1992). The learning and teaching of school algebra. In D.A. Grouws (eds.), Handbook of research on mathematics teaching and learning (pp. 390-419). New York: Macmillan Publishing Co. Knuth, E.J., Stephens, A.C., McNeil, N.M., &Alibal, M.W. (2006). Does understanding the equal sign matter? Evidence from solving equations. Journal for Research in Mathematics Education, 37(4), 297-312. Lester, F.K., & Lambdin, D.V. (2007). Problem solving and modelling. In Clarke, B. et al.(eds.) International perspectives on learning and teaching mathematics. Göteborg: NCM. Lithner, J. (2000). Mathematical reasoning in task solving. Educational Studies in Mathematics, 42, 165-190. NCTM (2000). Principles and standards of school mathematics. Reston, VA; NCTM. Niss, M., & Jensen, T.H. (eds.) (2002). Kompetencer og matematiklæring: Idéer og inspiration til udvikling af matematikundervisning i Danmark. Uddannelsesstyrelsens temahæfteserie 18. Copenhagen, Denmark: The Ministry of Education. Olteanu, C. (2007). ”What could x be?” Second degree equation and quadratic function as objects of learning. Umeå, Sweden: Umeå University. Sfard, A., & Linchevski, L. (1994). The gains and the pitfalls of reification: The case of algebra. Educational Studies in Mathematics, 26, 191-228. Skott, J., Hansen, H.C., Jess, K., & Schou, J. (2010). Ypsilon: Matematik för lärare. [Ypsilon: Mathematics for teachers]. Gleerups Utbildning AB, Malmö. The Swedish National Agency for Education (1999). Räcker kunskaperna i matematik? [Is the mathematical knowledge sufficient?] Stockholm: Högskoleverket. Vygotsky, L.S. (1978). Mind in society. Cambridge, MA: Harvard University Press. Vygotsky, L.S. (1986). Thought and language. Cambridge, MA: MIT Press.

Author Information

Birgit Gustafsson (presenting / submitting)
Mid Sweden University
Natural Sciences, Engineering and Mathematics
Härnösand
Mid Sweden University, Sweden; Universty of Borås, Sweden

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