Instrumentation for a Guided Discovery Approach to General Chemistry

普通化学引导发现方法的仪器

• 批准号: 8950745
• 负责人: Mauri Ditzler
• 金额: --
• 依托单位: College of the Holy Cross
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8950745&HistoricalAwards=false
• 关键词: Instrumentation; Guided; Discovery; Approach; General

In a two-semester laboratory sequence students are guided to rediscover the basic principles of chemistry. Instead of first learning theories in lecture and verifying the principles in the laboratory, students make laboratory observations and cases each student preforms experiments under slightly different conditions and the class results are entered into a PC, graphed and displayed by the instructor. Students participate as a group in the discussion of the results and in some cases are able to return immediately to the laboratory and test the predictive power of their hypotheses. Modern, rapid-scanning spectrometers and chromatographs are a central feature of the discovery laboratory process. These allow large numbers of students to discover concepts which are usually not considered in the general chemistry laboratory. In addition, certain classical general chemistry experiments are made more efficient through use of this modern instrumentation thus making it possible for students to gather more data in a single period thereby maximizing the amount of data available and still leaving time for group discussions of the trends. The institution is matching the NSF grant with an equal amount of funds.

在为期两个学期的实验过程中，引导学生重新发现化学的基本原理。不是先在课堂上学习理论并在实验室中验证原理，而是学生进行实验室观察和案例每个学生在略有不同的条件下进行实验，课堂结果输入PC，由教师绘制图形并显示。学生们以小组形式参与对结果的讨论，在某些情况下，他们能够立即返回实验室，测试他们的假设的预测力。现代的快速扫描光谱仪和色谱仪是发现号实验室过程的中心特征。这使大量的学生能够发现在普通化学实验室中通常不会考虑的概念。此外，通过使用这种现代仪器，某些经典的普通化学实验变得更有效率，从而使学生能够在单一时间内收集更多数据，从而最大限度地增加可用的数据量，并留出时间进行趋势的小组讨论。该机构正在将NSF的拨款与同等数额的资金相匹配。