ABSTRACT Subitising, a quick apprehension of the numerosity of a small set of items, has been found to change from an individual's reliance on perceptual to conceptual processes. In this study, we utilised a constructivist teaching experiment methodology to investigate how the subitising activity of one preschool student, Amy, related to her construction of prenumerical units. Subitising and counting tasks were designed to assess and perturb Amy's thinking relative to her construction of units, and to observe changes in Amy's activity associated with the different tasks. Findings indicate that as Amy's subitising activity changed from perceptual to conceptual, she constructed subitised motor units and subitised figurative units. Implications of this study suggest that the construction of subitised units may support young children's later development of arithmetic units.

中文翻译：

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与单元构建相关的子化活动：案例研究

摘要 Subitising 是对一小组项目数量的快速理解，已被发现从个人对感知过程的依赖转变为对概念过程的依赖。在这项研究中，我们利用建构主义教学实验方法来调查一名学龄前学生 Amy 的 subitising 活动与她的数字化单元的构建之间的关系。Subitising 和计数任务旨在评估和干扰 Amy 相对于她的单位构建的思考，并观察与不同任务相关的 Amy 活动的变化。研究结果表明，随着艾米的子化活动从感知变为概念，她构建了子化的运动单元和子化的比喻单元。