2018
DOI: 10.1590/0104-4060.58693
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Estratégias de estimativa na reta numérica

Abstract: RESUMO O presente estudo teve como objetivo verificar quais estratégias foram mais utilizadas por 30 crianças do 2o ao 6o ano escolar (seis de cada ano), de uma escola pública da cidade de Porto Alegre/RS, para realizar estimativa numérica na tarefa “estimativa na reta numérica”, a partir de entrevistas individuais semiestruturadas. O principal objetivo desse estudo foi, além de elencar as principais estratégias apresentadas, indicar as estratégias mais frequentes e/ou mais precisas. Foram encontradas oito dif… Show more

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Cited by 3 publications
(5 citation statements)
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“…Recently, they applied interventions (see section Difficulties in learning mathematics, above) in an effort to improve mathematical performance in children with ADHD (Sperafico, Pisacco, Corso, Rohde, & Dorneles, 2019). At the same time, they carried out basic research about representations of numbers in a number line estimation task with adults (Duro & Dorneles, 2019) and hearing and deaf children, analysing the strategies used by those groups (Duro & Dorneles, 2018). They described two different sign language systems and their influence in the learning of numbers (Rios & Dorneles, in press).…”
Section: Specific Questions About Numerical Cognition In Brazilmentioning
confidence: 99%
See 3 more Smart Citations
“…Recently, they applied interventions (see section Difficulties in learning mathematics, above) in an effort to improve mathematical performance in children with ADHD (Sperafico, Pisacco, Corso, Rohde, & Dorneles, 2019). At the same time, they carried out basic research about representations of numbers in a number line estimation task with adults (Duro & Dorneles, 2019) and hearing and deaf children, analysing the strategies used by those groups (Duro & Dorneles, 2018). They described two different sign language systems and their influence in the learning of numbers (Rios & Dorneles, in press).…”
Section: Specific Questions About Numerical Cognition In Brazilmentioning
confidence: 99%
“…After applying the same number line estimation task, Duro and Dorneles (2018) used individual semi-structured interviews to investigate the strategies adopted by 30 second-to-sixth-grade schoolchildren. Eight different strategies, ranging from simple exact counting to more complex ones involving multiplicative proportional structures, were found.…”
Section: Numbersmentioning
confidence: 99%
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“…Dorneles (2018), abordou esse modo de estimativa em um grupo de 30 alunos do 2º ao 6º ano do ensino fundamental, foram utilizadas três escalas diferentes (0-10, 0-20, 0-100) de retas e os números escolhidos pelas autoras foram 4,7,9,17,25,49,78,95. Nesta tarefa, os resultados mostraram que os alunos progrediram em estratégias de estimativa de acordo com a idade, pois as estratégias mais simples e, em contrapartida, menos No segundo artigo, Duro e Dorneles (2019), utilizaram dois tipos de estimativa, realizando uma comparação entre essas atividades.…”
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