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首页> 外文期刊>Journal of Chemical Education >Learning Laboratory Chemistry through Electronic Sensors, a Microprocessor, and Student Enabling Software: A Preliminary Demonstration
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Learning Laboratory Chemistry through Electronic Sensors, a Microprocessor, and Student Enabling Software: A Preliminary Demonstration

机译：学习实验室化学通过电子传感器，微处理器和学生启用软件：初步示范

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摘要

We describe the construction and initial demonstration of a new instructional tool called ROXI (Research Opportunity through eXperimental Instruction). The system interfaces a series of electronic sensors to control software via the Arduino platform. The sensors have been designed to enable low-cost data collection in laboratory courses. Data are collected by a computer and can be displayed or plotted in nearly real time, allowing chemistry to come to life. In addition, student data can be analyzed by the computer automatically and used to provide feedback to assess whether students are analyzing experimental results correctly. Because the computer and software are able to perform all computations and data analysis independently of the student, the software can assess the accuracy of student calculations and even assign grades based upon performance. In addition, since measurement data are logged and plotted, it is possible for the software to assist in assembling laboratory report files that students can print and submit. We envision that the feedback provided to students regarding the accuracy of computations and queries at the conclusion of the experiment can improve laboratory instruction by forcing students to revise or reinforce their mental models at the time of instruction. While this work describes only an initial implementation of the concept, the ROXI platform may ultimately be a powerful mechanism to improve laboratory instruction or serve for administering distance learning laboratory courses.
机译：我们描述了一个名为Roxi的新教学工具的建筑和初步演示（通过实验指导的研究机会）。系统接口一系列电子传感器以通过Arduino平台控制软件。该传感器旨在实现实验室课程中的低成本数据收集。数据由计算机收集，并且可以在几乎实时显示或绘制，允许化学生动。此外，可以自动分析学生数据，并用于评估学生是否正在正确分析实验结果的反馈。由于计算机和软件能够独立于学生执行所有计算和数据分析，因此该软件可以评估学生计算的准确性，甚至基于性能指定等级。此外，由于记录和绘制了测量数据，因此软件可以帮助学生可以打印和提交的实验室报告文件组装。我们设想向学生提供关于计算的准确性和查询的学生的反馈可以通过迫使学生在教学时修改或加强他们的心理模型来改善实验室教学。虽然这项工作仅描述了概念的初步实现，但是ROXI平台最终可能是改善实验室指导或用于管理远程学习实验室课程的强大机制。

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