Estimation abilities of large numerosities in Kindergartners

Area of Science:

• Cognitive Development
• Educational Psychology
• Numerical Cognition

Background:

• The approximate number system (ANS) is a foundational element for mathematical development.
• Limited understanding exists regarding the early development of ANS and its susceptibility to external influences before formal math education.

Purpose of the Study:

• To investigate numerical magnitude representations in 5-6-year-old children.
• To examine the impact of early number competence and school socio-economic index (SEI) on ANS development.
• To assess estimation abilities for large numerosities (8-64) using symbolic and non-symbolic formats.

Main Methods:

• Children's estimation abilities for large numerosities (8-64) were assessed using symbolic and non-symbolic output formats.
• Early symbolic and non-symbolic number competence (1-12) was evaluated at two time points in Kindergarten.
• The study considered children's age, early number skills, and school's socio-economic index (SEI).

Main Results:

• Children as young as 5 demonstrated estimation abilities exceeding their explicit symbolic knowledge.
• Third-grade kindergartners showed improved ANS accuracy compared to second-grade kindergartners.
• Stronger exact symbolic number competence correlated with refined ANS, particularly in older children nearing formal math instruction.
• Higher SEI positively influenced estimation in older children and exact number competence in both age groups.

Conclusions:

• Approximate numerical representations are linked to exact number competence in preschoolers, serving as a basis for mathematical learning.
• The ANS is sensitive to external factors like SEI, indicating potential for early educational interventions.
• Targeted preschool strategies may enhance the development of the ANS and subsequent mathematical abilities.