Implementación de la estrategia “aprendizaje por investigación” mediante un problema experimental de estequiometría
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Universidad Distrital Francisco José de Caldas
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El trabajo desarrollado en el laboratorio describe una estrategia reconocida como “Aprendizaje por Investigación” que se genera a partir de un problema experimental de estequiometria donde el principio fundamental a implementar es la investigación. El problema a resolver es la determinación de la cantidad de Bicarbonato de Sodio (NaHCO3) en una muestra de Alka-seltzer® por dos métodos distintos; método por perdida de masa y método de recolección de gases para luego dar validez a los resultados a partir de la repetición, determinar la precisión y la exactitud de los resultados, parámetros útiles para analizar los valores obtenidos. Esta propuesta que posibilita la participación activa, autónoma del estudiante, mejora sus procesos de construcción de conceptos y desarrollo de habilidades y destrezas.
In this work, we present a proposal of chemistry teaching that was developed to enable the active and autonomous participation of the student, as well as to improve their processes of concept construction and development of skills and abilities. The work was developed in the laboratory based on the perspective of "Learning by Research", which was generated from an experimental problem of stoichiometry around a research process. The problem to be solved was the determination of the amount of Sodium Bicarbonate (NaHCO3) in an Alka-seltzer® sample by two different methods; the method for mass loss and the method for gas collection, after that, students must to validate results from repetition, determine the precision and accuracy of the results, using parameters to analyze the values obtained.
In this work, we present a proposal of chemistry teaching that was developed to enable the active and autonomous participation of the student, as well as to improve their processes of concept construction and development of skills and abilities. The work was developed in the laboratory based on the perspective of "Learning by Research", which was generated from an experimental problem of stoichiometry around a research process. The problem to be solved was the determination of the amount of Sodium Bicarbonate (NaHCO3) in an Alka-seltzer® sample by two different methods; the method for mass loss and the method for gas collection, after that, students must to validate results from repetition, determine the precision and accuracy of the results, using parameters to analyze the values obtained.
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stoichiometry, Inquiry-based learning, experimental problems solution, Estequiometria, aprendizaje por investigación, resolución de problemas experimentales.