Abstract
In this chapter, we focus on pattern generalization studies that have been conducted with elementary school children from Grades 1 through 5 (ages 6 through 10 years) in different contexts. Our contribution to the current research based on elementary students’ understanding of patterns involves extrapolating the graded nature of their pattern generalization schemes on the basis of their constructed structures, incipient generalizations, and the use of various representational forms such as gestures, words, and arithmetical symbols in conveying their expressions of generality. The gradedness condition foregrounds the dynamic emergence of parallel types of pattern generalization processing that is sensitive to a complex of factors (cognitive, sociocultural, neural, constraints in curriculum content, nature and type of tasks, etc.), where progression is seen not in linear terms but as states that continually evolve based on more learning. In a graded pattern generalization processing view, there are no prescribed stages or fixed rules but only states of conceptual coalescences and coherent covariations that change with more experiences. The chapter addresses different aspects of pattern generalization processing that matter to elementary school children. We also explore approximate and exact pattern generalizations along three dimensions, namely: whole number knowledge, shape sensitivity, and figural competence. We further discuss the representational modes that elementary students oftentimes use to capture their emergent structures and incipient generalizations. These modes include gestural, pictorial, verbal, and numerical. In another section, we address grade-level appropriate use and understanding of variables via the notions of intuited and tacit variables. We close the section with an analysis of the relationship between elementary children’s structural incipient generalizations and the natural emergence of their understanding of functions.
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Notes
- 1.
We exclude younger children who have neurological impairments in approximate numerical processing (Ansari, 2010; Dehaene & Cohen, 1997).
- 2.
Mathematically, the pattern stages in Fig. 5.11a represent dilations (i.e. there is a fixed central point of projection). There is no research that deals with pattern stages that appear as a sequence of similitudes (i.e. similar figures that involve both isometry and dilation). The squares in Fig. 5.11b represent congruent figures that by definition can be established by applying at least one isometric action (Kay, 2001).
- 3.
For Duval (1999), visualization is an “intrinsically semiotic” (i.e., neither mental nor physical) cognitive activity. He distinguishes between visual perception (vision), which is primitive, and visualization, which has both epistemological and synoptic functions. Vision primarily engenders direct access and intuition of objects, while visualization involves the construction of a (semiotic) representation (epistemological function). In any semiotic representation, “relations or, better, organization of relations between representational units” are noted, including and especially those that are not at “all that accessible to vision” (Duval, p. 13). Also, while vision initially apprehends objects and their totality, it is never a “complete apprehension” (ibid) unlike visualization that engenders discourse and deductive actions (synoptic function).
- 4.
Context of the clinical interviews in third grade: The interviews took place toward the end of the school year without any intervening teaching experiment on patterns. Lack of instructional time prevented the third-grade class from exploring patterning activity. However, the author worked with the third grade teacher in ensuring that the entire third grade mathematics curriculum fostered structural and multiplicative thinking within and across the strands (i.e., number sense, algebra, statistics, data analysis, and probability, and geometry and measurement) were given the option to use the blocks to reconstruct the stages, however, they were asked to draw all the extended stages on paper. Like in the previous year, individual students were clinically interviewed on the five figural patterning tasks shown in Fig. 5.24. In each task, they were asked to: (1) construct stages 4 and 5 based on their initial interpretation of the given stages; (2) verbally describe stage 10; (3) try to transform their verbal description in arithmetical form involving whole numbers and the operations of multiplication and addition; and (4) state the total number of objects in stage 100 by using the arithmetical formula they established in (3). Concrete blocks were provided throughout the interview and drawn pictures of the pattern stages were shown one by one. The students were given the option to use the blocks to reconstruct the stages, however, they were asked to draw all the extended stages on paper.
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Rivera, F. (2013). Graded Pattern Generalization Processing of Elementary Students (Ages 6 Through 10 Years). In: Teaching and Learning Patterns in School Mathematics. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2712-0_5
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