Partial possible models: An approach to interpret students' physical representation

Camacho, Fernando Flores; Cázares, Leticia Gallegos

doi:10.1002/(sici)1098-237x(199801)82:1<15::aid-sce2>3.0.co;2-3

Cited by 16 publications

(7 citation statements)

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“…In middle school, they study the concept of density and use it to explain sinking and floating, or buoyancy in water. However, researchers (e.g., Camacho & Cazares, 1998; Hardy, Jonen, Moller, & Stern, 2006; Libarkin, Crockett, & Sadler, 2003; She, 2002) have reported that many middle and high school students hold naïve understandings of the phenomenon of buoyancy. Students attribute the sinking and floating of objects either to their size (large objects sink while small ones float), shape (e.g., a round object sinks while a boat‐shaped object floats), weight (heavy objects sink and light ones float), or material (e.g., an object that is metal‐like sinks).…”

Section: Methodsmentioning

confidence: 99%

Morphological identification of ganglion cells expressing the α subunit of type II calmodulin‐dependent protein kinase in the macaque retina

Calkins

Sappington

Hendry

2004

J of Comparative Neurology

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Expression of the alpha subunit of type II calmodulin-dependent protein kinase (alphaCamKII) distinguishes the koniocellular neurons of the primate lateral geniculate nucleus (LGN) from the primary parvo- and magnocellular neurons, but whether the same neurochemical signature distinguishes the retinal ganglion cells providing them input is not known. We find that, in the retina, alphaCamKII expression also differentiates two primary groups of ganglion cell, both characterized by broad, sparsely branching dendritic trees and cell bodies intermediate in size between the parvo- and magnocellular-projecting ganglion cells. Cells in the first group have three or four primary dendrites, a thick axon, and a rounded cell body and likely are made up of multiple types. In contrast, ganglion cells in the second group demonstrate a highly regular morphology, with strictly two primary dendrites and a thinner axon emanating from a smaller, elliptical cell body. This cell resembles the "large sparse" ganglion cell identified by others in retrograde labeling from the LGN and represents about 2% of all ganglion cells. In the optic nerve, alphaCamKII+ axons are also intermediate in size and form a bimodal distribution, correlating with the axonal sizes of the two groups of ganglion cell. For the LGN, we describe a group of alphaCamKII+ axon terminals with morphology consistent with terminals from retinal ganglion cells. These terminals form long, filamentous contacts with alphaCamKII+ relay cells and increase in frequency from the dorsal to the ventral koniocellular regions. Our results indicate that ganglion cells expressing alphaCamKII represent multiple projections to the brain, at least one of which provides input to one or more koniocellular regions of the LGN.

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Section: Methodsmentioning

confidence: 99%

Morphological identification of ganglion cells expressing the α subunit of type II calmodulin‐dependent protein kinase in the macaque retina

Calkins

Sappington

Hendry

2004

J of Comparative Neurology

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“…One of the opinions we share with Sherin Krakowski y Lee [25] is that students build their reasoning, and therefore, their explanations when they intend to answer questionings; this has also been expressed in the Possible Partial Models [26] where students construct their reasoning based on a set of constricting and corresponding ideas that come from previous cognitive resources.…”

Section: Children's Reasoningmentioning

confidence: 99%

Preschool Children’s Reasoning about Sound from an Inferential-Representational Approach

2021

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The purpose of this article is to present an analysis to identify the reasoning processes and representations that preschool students develop about sound based on the inferential-representational approach. Participants were 18 preschool students between the ages of four and five attending three rural schools located in the Sierra Norte of Puebla, Mexico. Data were obtained through a 14 question semi-structured interview. From children’s answers to the formulated questions, an inferential analysis method was applied to identify intentionality, representation elements, sign-material expressions, representations, inferences, and coordination rules in students’ constructions. The results show that children build a basic set of epistemic tools to give meaning to their interpretations and can use them as surrogate reasoning to make inferences. This research constitutes the first approximation toward the understanding of preschool children’s reasoning forms with an inferential-representational approach and constitutes a new approach that puts forward new referents to analyze students of different ages. We consider that the described results and analysis have implications on science education at this educational level.

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“…Partial possible models (PPM): an approach to interpreting representations PPM are believed to be useful in analysing the relationships between representations that shape structures with a certain level of coherency (Flores-Camacho & Gallegos-Cázares., 1998;Gallegos-Cázares, Flores-Camacho, Calderón-Canales, Perrusquía-Máximo, & García-Rivera, 2014). In this proposal, the inferences and explanations that the subjects make can be described by a PPM model's components, made up of three sets: constricting ideas (CI); correspondence rules (CR); and the set of applications or phenomena (A) that can be described from the CI and CR elements.…”

Section: The Representational Analysis Approachmentioning

confidence: 99%

“…Los Modelos Parciales Posibles (MPP): una forma de interpretación de las representaciones Para analizar las relaciones entre representaciones que conforman estructuras con cierto nivel de coherencia se consideran útiles los MPP (Flores-Camacho & Gallegos-Cázares., 1998;Gallegos-Cázares, Flores-Camacho, Calderón-Canales, Perrusquía-Máximo, & García-Rivera, 2014). En esta propuesta, las inferencias y explicaciones que hacen los sujetos pueden describirse por los componentes de un modelo MPP constituido por tres conjuntos: las ideas constrictoras (IC); las reglas de correspondencia (RC); el conjunto de aplicaciones o fenómenos (A) que pueden ser descritos a partir de los elementos de IC y RC.…”

Section: El Enfoque De Análisis Representacionalunclassified

Representations over the Earth’s shape and the process of day and night from Nahua indigenous schoolchildren / Representaciones sobre la forma de la Tierra y del proceso día y noche en niños de escuelas indígenas Nahuas

Cázares

Camacho

Calderón-Canales

et al. 2017

Infancia y Aprendizaje

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This research presents the way in which children from a Nahua indigenous community build representations of the Earth's shape, as well as the process that causes day and night. Concepts from school and local culture were studied. For the first case, a questionnaire was applied to 331 children, out of which 38 children were then interviewed on the topics from the questionnaire. For the cultural ideas, three teachers from the region and 30 children from the sample were interviewed. The results show that the representations depend on the form of questioning and the existence of three models: a flat structure with a celestial dome and mechanisms that hide or remove the Sun or the Moon in order to create day and night; a spherical structure with a surrounding sky, where the Sun and Moon rise and set; and a transitional model with a hollow sphere, flat surface and celestial dome. Cultural ideas do not appear to have any influence over these models, probably due to a loss of the community's cosmogonic knowledge and the age of the children.

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Partial possible models: An approach to interpret students' physical representation

Cited by 16 publications

References 0 publications

Morphological identification of ganglion cells expressing the α subunit of type II calmodulin‐dependent protein kinase in the macaque retina

Morphological identification of ganglion cells expressing the α subunit of type II calmodulin‐dependent protein kinase in the macaque retina

Preschool Children’s Reasoning about Sound from an Inferential-Representational Approach

Representations over the Earth’s shape and the process of day and night from Nahua indigenous schoolchildren / Representaciones sobre la forma de la Tierra y del proceso día y noche en niños de escuelas indígenas Nahuas

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