Students’ Independent Use of Screencasts and Simulations to Construct Understanding of Solubility Concepts

Students’ Independent Use of Screencasts and Simulations to Construct Understanding of Solubility Concepts
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学生独立使用截屏视频和模拟来构建对溶解度概念的理解

DOI:
10.1007/s10956-017-9684-2
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发表时间:
2017
影响因子:
4.4
通讯作者:
VandenPlas, Jessica R.
VandenPlas, Jessica R.
中科院分区:
教育学2区
文献类型:
--
作者:
Herrington, Deborah G.;Sweeder, Ryan D.;VandenPlas, Jessica R.

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随着学生越来越多地使用在线化学动画和模拟,了解学生如何独立使用这些材料并为学生在课堂外使用这些资源制定一套最佳实践变得越来越重要。大多数研究学生使用动画和模拟的文献都集中在课堂上使用,一些研究表明,当学生在最小的指导下使用模拟时,可以获得更好的结果,而另一些研究则表明需要适当的支架。本研究考察了(1)学生对离子和共价化合物在水中溶解的概念的理解和(2)学生使用电子资源时,学生被要求完成一项任务,无论是通过操纵自己的模拟或通过观看一个视频,其中一个专家操纵相同的模拟。比较学生的前后测试成绩,作业问题的答案,近转移后续问题和眼动跟踪分析表明,观看屏幕的学生对溶解过程有了更好的理解,包括在颗粒水平上与水的相互作用,特别是共价化合物。此外,眼动追踪表明,不同的治疗组(屏幕播放或模拟)使用电子资源的方式有显着差异。
As students increasingly use online chemistry animations and simulations, it is becoming more important to understand how students independently engage with such materials and to develop a set of best practices for students’ use of these resources outside of the classroom. Most of the literature examining students’ use of animations and simulations has focused on classroom use with some studies suggesting that better outcomes are obtained when students use simulations with minimal guidance while others indicate the need for appropriate scaffolding. This study examined differences with respect to (1) student understanding of the concept of dissolution of ionic and covalent compounds in water and (2) student use of electronic resources when students were asked to complete an assignment either by manipulating a simulation on their own or by watching a screencast in which an expert manipulated the same simulation. Comparison of students’ pre- and posttest scores, answers to assignment questions, near-transfer follow-up questions, and eye-tracking analysis suggested that students who viewed the screencast gained a better understanding of the dissolving process, including interactions with water at the particulate level, particularly for covalent compounds. Additionally, the eye tracking indicated that there were significant differences in the ways that the different treatment groups (screencast or simulation) used the electronic resources.
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