Learning Improper Fractions with the Number Line and the Area Model

Learning Improper Fractions with the Number Line and the Area Model
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用数轴和面积模型学习假分数

DOI:
10.1080/15248372.2021.1890603
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发表时间:
2021
影响因子:
2.1
通讯作者:
Gunderson, Elizabeth A.
Gunderson, Elizabeth A.
中科院分区:
心理学4区
文献类型:
--
作者:
Tian, Jing;Bartek, Victoria;Rahman, Maya Z.;Gunderson, Elizabeth A.

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在分数教学中,数线模型和面积模型都被广泛使用。先前的研究发现,二年级和三年级的学生在使用数字线进行15分钟的训练后,比使用面积模型表现出更好的分数知识。目前的研究旨在将这些发现扩展到不适当的分数。我们将四年级和五年级的学生随机分配到数字线训练,区域模型训练或非数字控制条件。数线和面积模型训练涉及适当和不适当的分数,并密切模仿先前研究中的训练程序。分数训练与面积模型产生改善儿童的面积模型估计适当和不适当的分数。然而,与我们的预期相反,用数字线训练并没有改善数字线估计,也没有训练导致评估分数大小知识的转移任务的改善。这些研究结果表明,儿童可以发展的技能,代表不适当的分数面积模型与简短的培训。然而,目前还不清楚这种技能是否能提高对分数大小的全面理解。
Number lines and area models are both used pervasively in teaching fractions. Prior studies found that second and third graders demonstrated better magnitude knowledge of proper fractions after a 15-minute training using the number line as compared to using the area model. The current study aimed to extend these findings to improper fractions. We randomly assigned fourth and fifth graders to a number line training, an area model training, or a non-numerical control condition. The number line and area model trainings involved both proper and improper fractions and were closely modeled on the training procedures in prior studies. Fraction training with the area model produced improvements in children’s area model estimation of proper and improper fractions. However, contrary to our expectations, training with the number line did not improve number line estimation, and neither training led to improvements in transfer tasks assessing fraction magnitude knowledge. These findings suggest that children can develop the skill to represent improper fractions on area models with brief training. Nevertheless, it is unclear whether this skill enhances a comprehensive understanding of fraction magnitudes.
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