Abstract

DURO, Mariana Lima  and  DORNELES, Beatriz Vargas. Development of numerical estimate in primary education. Educ. mat. [online]. 2020, vol.32, n.3, pp.68-96.  Epub Dec 06, 2021. ISSN 2448-8089.  https://doi.org/10.24844/em3203.03.

There is evidence that has related the ability of numerical estimation to mathematical performance. However, it is observed that the results brought by studies in this area are still inconsistent and, often, contradictory. Thus, the present study aims to understand the development of number Estimation of Discrete Quantities (ENQ), in students from the 2nd to the 6th school. A quantitative cross-sectional study was carried out to observe possible levels of development of the ability to make estimations. The results were obtained from the calculation of the relative precision, based on a Number Estimation of Quantities Test (TENQ), and indicated different levels of development for each situation presented in the tasks. It was concluded that the number estimate is developed in children, through different levels of accuracy. Due to this result, it was suggested that the number estimation of quantities to be a skill that can be developed and improved throughout life.

Keywords : Numerical estimation of quantities; mathematical development; accuracy; mathematics in elementary school; numerical estimate.

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