Bridging the Conceptual Divide Between Theoretical and Applied Environmental Chemistry

弥合理论和应用环境化学之间的概念鸿沟

• 批准号: 1140980
• 负责人: Anne Jefferson
• 金额: $ 18.92万
• 依托单位: Kent State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1140980&HistoricalAwards=false
• 关键词: Bridging; Conceptual; Divide; Between; Theoretical

Although stable-isotope ratios inform a wide range of environmental processes and are used increasingly in earth-system research, effective strategies for learning about challenging stable-isotope concepts has lagged in the undergraduate curriculum. Recent advances in instrumentation for rapid, high-precision, and more-affordable measurements of stable isotope ratios provide an opportunity to address this challenge. The project is developing, implementing and evaluating student-led investigations of stable-isotope systems in upper-division geoscience courses. The active, inquiry-based approaches are engaging students in this important but abstract content area and leading to deeper conceptual learning of stable-isotopic systems, with specific applications to watershed processes and to oceanic records of ancient climate change. Hands-on investigations, combined with concept-mapping and jigsaw approaches to pedagogy, are being assessed through a comprehensive and multi-faceted effort, involving both quantitative and qualitative methods. The curricular and pedagogical approaches, as well as relevant isotopic data for teaching, are being shared with other institutions through a web portal and conference workshops.

尽管稳定同位素比率为广泛的环境过程提供了信息，并越来越多地被用于地球系统研究，但学习挑战稳定同位素概念的有效战略在本科课程中一直滞后。用于快速、高精度和更实惠的稳定同位素比率测量的仪器的最新进展为应对这一挑战提供了机会。该项目正在开发、实施和评估在高级地学课程中由学生主导的稳定同位素系统调查。积极的、以探究为基础的方法正在吸引学生参与这一重要但抽象的内容领域，并导致对稳定同位素系统的更深层次的概念性学习，具体应用于分水岭过程和古代气候变化的海洋记录。正在通过包括定量和定性方法在内的全面和多方面的努力，结合概念图和拼图教学法对实际调查进行评估。正在通过门户网站和会议讲习班与其他机构分享课程和教学方法以及有关的同位素数据。

项目成果

Mimicking the Rayleigh Isotope Effect in the Ocean [English]

模拟海洋中的瑞利同位素效应 [英文]

• DOI: 10.5670/oceanog.2015.89
• 发表时间: 2015
• 期刊: Oceanography
• 影响因子: 2.8
• 作者: Griffiths, Elizabeth;Ortiz, Joseph;Jefferson, Anne
• 通讯作者: Jefferson, Anne