Improving Undergraduate Learning Through Use of a Low-Vacuum Scanning Electron Microscope with an Energy Dispersive X-Ray Spectrometer

通过使用低真空扫描电子显微镜和能量色散 X 射线光谱仪改善本科生学习

• 批准号: 9951390
• 负责人: Rachel Beane
• 金额: $ 10万
• 依托单位: Bowdoin College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9951390&HistoricalAwards=false
• 关键词: Improving; Undergraduate; Learning; Through; Use

This project optimizes the expert and novice student learning by adapting the personal-computer controlled LVSEM/EDS which integrates research and discovery-based experiences into undergraduate courses. Using "hands-on" discovery and research experiences to educate undergraduate students implements recommendations such as Bonwell & Eisons' (1991) "Active Learning" and Tewksbury's (1995) "Strategies fro Moving Away from lectures. Other pedagogical reports emphasize research activities such as NSF's "Shaping the Future" and Holliday, etal's (1996) "Straight Talk about Research to Geoscience teachers" Connecticut College, Amherst College and Middlebury College there has been success in using the instrument in their courses. By adapting this equipment to uses in undergraduate science and non-science majors courses, students are imaging and making chemical analysis of a range of specimens (e.g. minerals, microfossils, sea urchins, cell structures, bone tools, and ceramics) which are promoting problem solving and communication of discoveries. We are implementing the use of this equipment in laboratories in courses across the curriculum (i.e. introductory, intermediate, and advanced courses in geology, biology, chemistry, and anthropology) and we share the laboratories and outcomes with colleagues within and outside the college. This project is having a particular impact on the geology curriculum that is currently rich in field experiences, but poor in analytical laboratory experiences by adapting these technologies. Undergraduates in geology courses are using the LVSEM/EDS in a variety of applications including analyzing minerals to obtain information on crystal form and chemistry, and by examining suspended particulate matter to understand marine biogeochemical fluxes. The instrument is incorporated into 18 courses throughout the curriculum. The students are experiencing discovery, acquiring first-hand knowledge in the processes of science (including hypothesis generation and data collection), and appreciating the importance and significance of science in their lives.

该项目通过调整个人计算机控制的LVSEM/EDS，将研究和发现为基础的经验整合到本科课程中，优化了专家和新手学生的学习。 使用“动手”的发现和研究经验，教育本科生实施的建议，如邦韦尔艾森（1991年）“主动学习”和图克斯伯里（1995年）“战略远离讲座。 其他教学报告强调研究活动，如国家科学基金会的“塑造未来”和霍利迪等人（1996年）的“直接谈论地球科学教师的研究”，康涅狄格学院、阿默斯特学院和米德尔伯里学院在其课程中使用该仪器方面取得了成功。 通过调整这种设备在本科科学和非科学专业的课程中使用，学生正在成像和一系列标本（例如矿物，微化石，海胆，细胞结构，骨工具和陶瓷）的化学分析，这是促进解决问题和交流的发现。 我们正在实施在整个课程的课程实验室使用这种设备（即地质学，生物学，化学和人类学的入门，中级和高级课程），我们与学院内外的同事分享实验室和成果。该项目对地质学课程产生了特别的影响，目前地质学课程具有丰富的实地经验，但通过采用这些技术，分析实验室经验不足。地质学专业的本科生正在各种应用中使用LVSEM/EDS，包括分析矿物以获得晶体形式和化学信息，以及通过检查悬浮颗粒物来了解海洋地球化学通量。该工具被纳入整个课程的18门课程。学生们正在体验发现，在科学过程中获得第一手知识（包括假设生成和数据收集），并欣赏科学在他们生活中的重要性和意义。