Comprensión de las decenas y aplicabilidad de las operaciones en problemas aritméticos verbales
Loading...
Official URL
Full text at PDC
Publication date
2014
Advisors (or tutors)
Journal Title
Journal ISSN
Volume Title
Publisher
Sociedad Española de Investigación Educación Matemática
Citation
Abstract
Estudiamos la comprensión de la decena y el conocimiento sobre la aplicabilidad de las operaciones aritméticas en un contexto de resolución de problemas, con alumnos de primer curso de educación primaria. Para ello, planteamos problemas de estructura aditiva que pueden resolverse aplicando los algoritmos de suma y resta, alternándolos con otros de estructura multiplicativa, con grupos de diez, cuya estrategia óptima de resolución implica el conocimiento del valor posicional de números de dos cifras. Los problemas se realizan en un taller semanal a lo largo de todo el curso. Recogemos datos mediante vídeo, entrevistas, hojas de registro y fotografías. En los resultados, destaca la preferencia de los alumnos por el uso de estrategias informales de modelización directa. En menor medida, los niños van incorporando los algoritmos, las estrategias inventadas y el conocimiento del valor posicional para resolver los problemas.
We study the understanding of tens and the knowledge about the applicability of arithmetic operations in a context of problem solving, with first grade students. To this end, we propose problems of additive structure that can be solved by applying the algorithms for addition and subtraction, alternating them with other problems of multiplicative structure with groups of ten, which optimum resolution strategy requires the knowledge of place value of two digit numbers. The problems are made in a weekly problem solving workshop throughout the whole course. We collect data through video, interviews, record sheets and photographs. In the results, we highlight the preference of students for the use of informal strategies of direct modeling. To a lesser extent, children use algorithms, invented strategies and knowledge of place value to solve the problems.
We study the understanding of tens and the knowledge about the applicability of arithmetic operations in a context of problem solving, with first grade students. To this end, we propose problems of additive structure that can be solved by applying the algorithms for addition and subtraction, alternating them with other problems of multiplicative structure with groups of ten, which optimum resolution strategy requires the knowledge of place value of two digit numbers. The problems are made in a weekly problem solving workshop throughout the whole course. We collect data through video, interviews, record sheets and photographs. In the results, we highlight the preference of students for the use of informal strategies of direct modeling. To a lesser extent, children use algorithms, invented strategies and knowledge of place value to solve the problems.