General chemistry: expanding the learning outcomes and promoting interdisciplinary connections through the use of a semester-long project.
General chemistry: expanding the learning outcomes and promoting interdisciplinary connections through the use of a semester-long project.
复制标题
DOI：
10.1187/cbe.05-05-0077
复制
发表时间：
2006-01-01
期刊：
影响因子：
--
通讯作者：
Wenzel, Thomas J
中科院分区：
文献类型：
--
作者：
Wenzel, Thomas J
介绍了理科专业第一学期普通化学课程的实验室组成部分。实验室包括一个学期的项目，以小组形式进行。学生们被要求检查在铅污染土壤中生长的植物是否比在未污染土壤中生长的植物吸收更多的铅。他们还被要求检查雨水的酸度是否会影响植物吸收的铅量。然后，在实验的设计和实施中，小组被赋予相当大的独立性。一旦种子被种植，这需要大约4周的时间，在收获和分析植物之前，几个较短的实验被整合进来。项目和小型工作组的使用允许开发比“传统”普通化学实验室更广泛的学习成果。这些结果的性质和一些学生的反应，实验室的经验进行了说明。这个特别的项目也很好地展示了化学，生物学，地质学和环境研究之间的联系。
The laboratory component of a first-semester general chemistry course for science majors is described. The laboratory involves a semester-long project undertaken in a small-group format. Students are asked to examine whether plants grown in soil contaminated with lead take up more lead than those grown in uncontaminated soil. They are also asked to examine whether the acidity of the rainwater affects the amount of lead taken up by the plants. Groups are then given considerable independence in the design and implementation of the experiment. Once the seeds are planted, which takes about 4 wk into the term, several shorter experiments are integrated in before it is time to harvest and analyze the plants. The use of a project and small working groups allows for the development of a broader range of learning outcomes than occurs in a "traditional" general chemistry laboratory. The nature of these outcomes and some of the student responses to the laboratory experience are described. This particular project also works well at demonstrating the connections among chemistry, biology, geology, and environmental studies.