This study aimed at analysing traditionally taught children's acquisition and use of shortcut
strategies in the number domain 20–100. One-hundred-ninety-five second, third, and fourth …

Mental calculations and estimations are basic, everyday skills that are essential for real-life
arithmetic operations and number sense. This book presents a much needed overview and …

In this article, I present and build on the ideas of John Threlfall [(Educational Studies in
Mathematics 50: 29–47, 2002)] about strategy development in mental mathematics contexts …

The paper aims to explore mental calculation strategies and the frequency of their
application in tasks. In the paper, we categorized mental calculation strategies related to four …

This article is in continuation of previous work reported in Proulx (2013a, 2015a). It is part of
a wider research programme oriented toward scrutinizing the nature of the mathematical …

Die Automatisation der additiven Grundaufgaben zumindest im Zahlenraum bis 10 wird in
der aktuellen deutschsprachigen Fachdidaktik als ein wichtiges Unterrichtsziel bereits des …

This article reports on a study, part of a larger research program, focused on issues of
mental mathematics with mathematical objects other than numbers. The study is about …

Este estudo visa compreender as estratégias e erros que os alunos do 6. º ano evidenciam
em tarefas de cálculo mental e como evoluem estas estratégias ao longo de uma …

This study examined sixth-grade students' problem-solving performance and representation
use as a result of an instructional intervention. It responds to recently adopted mathematics …

Numeracy knowledge is very important to learn from an early stage because of numeracy
encompasses identifying numbers, basic computation, measurement, geometry, probability …