Journal of Mathematical Behavior最新文献

Background

This comparative case study examined the use of math walks with middle grade youths and adult facilitators in an informal STEM learning space. Math walks are place-based walking tours where youths and facilitators critically examine and ask math-related questions about their environment.

Method

Drawing on situated theories of learning and frameworks for understanding group participation, we examined how facilitators constrained or supported youths’ mathematical thinking as they participated in math walks at the local zoo.

Results

Using interaction and stance analysis, we identified, analyzed, and compared three contrasting cases: In the first case, the facilitator may have overly constrained youths’ mathematical thinking by asking leading questions and not providing time for youths to discuss their personal interests. In the second case, the facilitator may have underly constrained youths’ mathematical thinking by allowing youths to ask too many new questions without refining or developing any one specific question. In the third case, the facilitator supported mathematical thinking by praising youths’ work, layering on mathematical terminology, and providing clear and actionable instructions for how youths could refine their mathematical questions.

Conclusions

Findings support efforts to understand how adult facilitators can support youths in seeing mathematics within and asking mathematical questions about the world around them.

The literature has highlighted the significant role of definitions and defining in mathematics learning and teaching. Furthermore, non-prototypical figures are particularly important when teaching geometry, but teachers and pre-service teachers still have problems defining them. For these reasons, we investigated whether there were differences in the way that pre-service mathematics teachers constructed and selected definitions for prototypical and non-prototypical solids. In particular, the commognitive framework was employed to investigate the differences in the discourse of 33 pre-service secondary-school teachers when constructing and selecting definitions in task situations that involved prototypical and non-prototypical solids. Moreover, we studied if some commognitive conflicts appeared in task situations involving non-prototypical solids but not in similar task situations involving prototypical solids. The findings show some differences between the pre-service teachers’ discourses in both types of task situations. Additionally, some commognitive conflicts appeared only in task situations with non-prototypical solids. Lastly, we classified those commognitive conflicts.

Based on the theory of the Cognitive Structure of the Emotions (OCC), this article has a dual objective: 1) to document negative attitudes toward mathematics generated during the academic formation of Manuel, an adult who ended his school education 15 years before this investigation and today is a professional voice-over actor; and 2) to analyze the reflection of those attitudes in the emotions that emerged during the process of solving mathematical problems related to his work. Manuel was chosen from among ten voice-over professionals who, before the study began, manifested a strong aversion toward mathematics. Manuel was interviewed twice: once before, and then after solving the mathematical problems posed. Results indicate that his negative attitude toward mathematics was reflected in the emotions — frustration, fear, anger, and nervousness — he experienced while solving the problems.

This study is a qualitative case study that focuses on the instructional practice of a white woman teacher with three Black girls. We draw upon literature that describes racial storylines for Black girls to focus on how a white Woman teacher navigates racial storylines to enact instructional practices that are humanzing for Black girls. Specifically, we show how interactions the teacher has with three Black girls disrupt racial storylines about invisibility/hypervisibility, behavior, and ability. Implications of this work pushes back against the idea that Black girls are monolithic and illustrate practices in mathematics that support the success of Black girls.

Linguistic features as a task-related feature influence the difficulty of mathematical tasks. To reduce this influence (e.g., in testing situations), studies on linguistic simplification focus on modifying linguistic features. These studies show little or no effect on increasing test performance. An open question is whether a quantitative–exploratory approach with texts from a specific domain can be an additional model for reducing the linguistic influence on mathematical tasks. To answer this question, generalized linear mixed models were used to determine the effects of linguistic factors, the requirements of the items, and the effects of linguistic factors when differentiating the requirements of the items, while controlling for further person- and item-related effects. The results show that linguistic factors can have either a negative or positive influence on test performance. The findings indicate that for mathematics assessments and teaching, it might be essential to consider the influence of language factors and task requirements.

The Math-LIGHT program is directed at promoting literacy-rich mathematical instruction in middle school. A team of designers with different types of expertise pose Math-Light problems. We perform comparative analysis of problem-posing activities by experts with different types of expertise. We demonstrate that Activity Theory (Leontiev, 1978) is a powerful theoretical framework for the analysis of the structure of problem posing activity. Framed by activity theory we ask “Why?” questions to understand the main goals of posing problems; “What?” questions are directed at the characteristics of the PP process and PP products; and “How?” questions are aimed at identifying the tools used by the designers to fit the conditions in which the problems are implemented. We find that the three designers’ problem-posing activities are complimentary and suggest that the cooperative problem posing process is essential for posing problems that integrate different perspectives and thus allow more goals to be attained.

Adults and children are able to compare visually represented fractions. Past studies show that people are more efficient with continuous visualizations than with discretized ones, but the specific reasons are unclear. Presumably, continuous visualizations highlight magnitudes more directly, while discretized ones encourage less efficient strategies such as counting. In two experiments, adults and children compared the magnitudes of continuous and discretized tape diagrams of fractions. In both experiments, participants answered more accurately, faster, and with fewer eye saccades when the visualizations were continuous rather than discretized. Sequences of saccades indicated that participants used counting strategies less often with continuous than discretized diagrams. The results suggest that adults and children are more efficient with continuous than discretized visualizations because they use more efficient, magnitude-based strategies with continuous visualizations. The findings indicate that integrating continuous visualizations in classroom teaching more frequently could be beneficial for supporting students in developing fraction magnitude concepts.

To engage with specialized subject content, students must develop adequate reading skills. In mathematics, this includes to integrate information from different semiotic resources. This study elucidates how differences in the structural connections between mathematical symbols and written language in mathematics texts can affect the reading process. With the help of eye-tracking techniques, we investigated differences in focus and navigation when 15-year-olds read task texts in two distinct designs: a traditional design with written language presented in lines and all connections based on semantics; and a design including a graphic emphasizing links between symbols and explanations. While the graphic design was found to facilitate fast interpretation of the symbol–language connections, the traditional design seemed to encourage global reading, involving more text parts. When designing texts for mathematics learning, structural connections may be chosen to adapt texts to various student groups and purposes.

We substantiate the following claim: multi-variable narrative in qualitative research on problem posing bears promise for a better understanding of causality relationships between ways in which problem-posing activities are organized on the one hand, and characteristics of processes, products, and effects of problem posing on the other hand. Our notion of multi-variable narrative is first introduced by means of a hypothetical scenario. We then discuss relationships between different types of variables while adapting the terminology developed in mediation analysis literature to problem-posing situations and suggest heuristics for choosing problem-posing variables in research that aspires to inform practice. This is followed by an illustration in the context of a problem-posing activity by mathematics teachers. The illustration shows how features of the posed problems can be related to the problem-posing task organization, and how these relations may be mediated or moderated by particular features of the problem-posers, and by choices they make.

Despite the importance of graphical reasoning, graph construction and interpretation has been shown to be nontrivial. Paoletti et al. (2023) presented a framework that allows for a fine-grained analysis of students’ graphical reasoning as they conceive of graphs as representing two covarying quantities. In this paper, we show how the framework can be used to not only characterize a student’s graphing meanings and reasoning, but also to diagnose complexities in a student's development of such reasoning, and to design tasks that provide opportunities to resolve such complexities. We draw on data from a teaching experiment with a sixth-grade student in the U.S. to highlight how the framework allowed us to identify indications and contraindications of the student’s engaging in reasoning compatible with the framework. Further, we describe how this analysis supported us in designing a task that was aligned with the framework and proved productive in supporting the student's learning. We conclude with a discussion of our findings and their implications for task design and future research.