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自主科学实验是激发学生兴趣、提高学生科学探究能力的有效途径。研究基于微视频技术,结合科学实验的要求和自主实验的特征,设计了自主科学实验能力评价的一般模型,确定了安全性、规范性、科学性、清晰性、有效性、技术性、流畅性、生活化、探究性和新颖性等评价指标及权重,进行了内容效度的检测。研究以“电解饱和食盐水”实验为例,以上海市某普通高中一年级学生为研究对象,应用了评价模型,考查了学生在基于微视频技术的自主实验操作上的表现。本研究开辟了微视频技术在教学应用中的新领域,为学生科学实验能力的诊断和提升提供了参考。
Autonomous scientific experiment is to stimulate students ’interest and improve students’ ability of scientific inquiry. Based on the micro-video technology, combined with the requirements of scientific experiments and the characteristics of autonomous experiments, a general model of evaluation of autonomous scientific experiments was designed and the security, normative, scientific, clear, effective, technical, Life, inquisition and novelty, such as the evaluation index and weight, the content validity of the test. This study took the experiment of “Electrolytic saturated salt water” as an example. Taking the first year of a senior high school student in Shanghai as the research object, the evaluation model was applied to examine the performance of students in autonomous experiments based on micro video technology. This research opens up a new field of micro-video technology in teaching and provides a reference for the diagnosis and improvement of students’ scientific experiment ability.