An Interdisciplinary Project-Based Laboratory Curriculum in Chemistry Based on Ion Chromatography

化学(12)这个项目正在开发一个跨学科的，为期数周的，基于项目的，合作学习的实验室计划，在一年级化学和两门分析化学课程。该项目结合了生物学、环境科学和化学的学科，研究植物修复或超积累植物的使用，超积累植物能够积累金属离子以降低土壤中的金属水平。在《科学》、《环境》等期刊上概述的研究。Qual.和J.Geochem。施虐者。正在进行改装，以用于该项目。一个目标是引导学生从简单地记忆科学概念转向注重跨学科工作的指导性科学探究。学生(A)学习实验技术，(B)学习理解他们选择调查的问题所需的概念，(C)选择要调查的“问题”，(D)设计实验方法，(E)进行数据收集，(F)分析结果和(G)以研讨会形式将他们的发现传达给他们的同龄人。通过努力解决他们感兴趣的、跨学科性质的开放式问题，学生们学会批判性思考，成为更好的问题解决者，学习过程变得更加令人兴奋和相关。及早接触跨学科的问题解决方法会鼓励学生热衷于科学，并拥有成功的本科生研究经验。虽然研究表明，基于项目的合作学习提高了来自不同学术背景的所有能力水平的学生的成绩，但这种类型的学习被证明对女性、少数族裔或残疾学生特别有益。开发基于项目的课程所必需的主要仪器是双通道离子色谱系统，适用于用电化学检测测定阴离子和I类和11类阳离子，或用吸收检测测定过渡金属阳离子和有机化合物。

Chemistry (12)This project is developing an interdisciplinary, multi-week, project-based, cooperative-learning laboratory program in freshman chemistry and in two analytical chemistry courses. This project combines the disciplines of biology, environmental science and chemistry in investigating the area of phytoremediation or the use of hyperaccumulators, plants capable of accumulating metal ions to reduce levels of metal in soils. Investigations outlined in journals such as Science, J. Environ. Qual., and J. Geochem. Explor. are being adapted for use in this project. An objective is to guide the students away from simply memorizing scientific concepts and toward guided scientific inquiry with an emphasis on interdisciplinary work. Students (a) learn experimental techniques, (b) learn concepts required to understand the problem they choose to investigate, (c) select the "problem" to investigate, (d) design the experimental methods, (e) conduct the data collection, (f) analyze the results and (g) communicate their findings to their peers in a seminar format. By working to solve open-ended problems that are of interest to them and are interdisciplinary in nature, students learn to think critically and become better problem solvers, and the learning process becomes more exciting and relevant. Early exposure to interdisciplinary problem solving encourages students to enthusiastically remain in science and to have successful undergraduate research experiences. While studies have shown that project-based, cooperative learning increases achievement for students of all ability levels from diverse academic backgrounds, this type of learning is shown to be particularly beneficial to female, minority, or handicapped students. The major instrument that is essential for the development of this project-based curriculum is a dual-channel ion chromatography system suitable for determining anions and Group I and 11 cations with electrochemical detection, or transition metal cations and organic compounds with absorption detection.