Richard Lesh And Modeling Perspectives

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As a contemporary mathematics education researcher, Richard Lesh is know for describing what has been known as models and modeling perspectives in regard to mathematical problem solving, learning, and teaching (Lesh & Doerr, 2003). Models are defined as “purposeful mathematical descriptions of situations, embedded within particular systems of practice that feature an epistemology of model fit and revision” (Lesh & Lehrer, 2003). What modeling involves is a series of tests for fitness on models developed by the students as they think mathematically about a presented problem situation. This is all drawn from the work of other cognitive theorists (Dienes and Vygotsky included) who believe that we learn by interpreting our experiences. Lesh suggests …show more content…

Included in the forms of communication are the spoken and written language, symbols, diagrams, metaphors, and computer-based simulations (Cramer, 2003; Johnson & Lesh, 2003). This is also related to what Wertsch (1985) described as “mediated activity” as an extension of Vygotsky’s social formation of learning which has become an important component of learning as different forms of media will emphasize different aspects of a problem situation and the conceptual systems within the …show more content…

The notion is that ideas develop over time and the level of a student’s understanding can be influenced by many factors (Lesh & Lehrer, 2003). The challenge is to provide the opportunity for students to “extend, revise, reorganize, refine, modify, or adapt constructs (or conceptual systems) that they DO have” versus defining or creating new ideas (Lesh & Lehrer, 2003). Vygotsky (1978) mentions that language has an influence on the thinking of a student, but models and modeling perspectives extends beyond just language in that there are other influences from the culture of a student beyond language that have an influence on their thinking (Cobb & McClain, 2001). Along a variety of dimensions is how models and modeling perspectives develop the conceptual tools versus Vygotsky focus on internalizing the experience (Lesh, 2002). Thus, Lesh extends Vygotsky’s zone of proximal development to a multi-dimensional region in which there are various ways to develop an understanding of a concept as well as different paths to travel while exploring the different regions (Lesh & Lehrer,

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