是指导的还是随机的? 学生对跨背景的扩散进行推理
Aeryn L VanDerSlik1, Emily E Scott2, Mary Pat Wenderoth2
1Department of Physiology, Michigan State University, East Lansing, Michigan, United States.
Advances in physiology education
|September 15, 2025
概括
学生们经常使用"高到低"的度启发方法来扩散,但错过了潜在的随机运动. 这项研究表明,教练应该强调随机运动,以加深对生理运输的理解.
科学领域:
- 生理学教育教育 物理学教育
- 分子运输机制分子运输机制
背景情况:
- 扩散是生理学的核心概念,解释了分子向下倾斜的运动.
- 学生们经常理解"高到低"的度启发式,但不理解随机运动机制.
- 了解扩散对于涉及短距离分子旅行的各种生理过程至关重要.
研究的目的:
- 调查学生在推理扩散时使用的知识资源.
- 确定环境 (植物,动物,非生物) 是否影响资源激活和推理一致性.
- 分析学生如何概念化随机运动在扩散中的作用.
主要方法:
- 在三个背景下向学生提出关于扩散的配对问题:植物,动物和非生物.
- 利用资源框架来识别和分类学生的知识资源.
- 分析了响应模式,以评估资源激活和推理的一致性.
主要成果:
- 确定了14个共同知识资源和6个激活模式.
- "高到低"资源是普遍存在的 (73%),而"随机运动"资源是不常见的 (23%).
- 大多数学生 (76%) 在不同环境中表现出一致的推理;环境并没有显著改变资源使用.
结论:
- 学生表现出强烈依赖"高到低"的度启发式扩散.
- 扩散背后的随机运动机制经常被忽视或误解.
- 教育干预应侧重于明确教导随机运动,以促进对生理扩散的更全面的理解.
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