Uma trajetória na aprendizagem dos números racionais através da percentagem
Tipo de documento
Autores
Lista de autores
Gil, Helena, Serrazina, Lurdes y da-Ponte, João Pedro
Resumen
Este artigo tem como objetivo indicar os contributos que uma trajetória com um foco inicial na percentagem, que faz emergir de seguida o numeral decimal e posteriormente a fração, traz para a compreensão da natureza relacional dos números racionais. Trata-se de uma investigação baseada em design na modalidade de experiência de ensino na sala de aula. A recolha de dados resultou da observação participante, apoiada num diário de bordo, de gravações áudio e vídeo e da recolha das produções escritas dos alunos. Os resultados revelam que esta abordagem, partindo da percentagem, permite integrar os conhecimentos numéricos prévios intuitivos dos alunos na compreensão dos números racionais e apoia a construção de uma aprendizagem das diferentes representações, de forma interrelacionada, numa perspetiva de desenvolvimento de sentido de número.
Fecha
2018
Tipo de fecha
Estado publicación
Términos clave
Comprensión | Numérica | Números racionales | Otra (fuentes) | Otro (métodos) | Otro (relaciones)
Enfoque
Nivel educativo
Idioma
Revisado por pares
Formato del archivo
Referencias
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