Online Systems to Support Problem Solving and Learning in Introductory Chemistry

支持化学入门问题解决和学习的在线系统

• 批准号: 0443041
• 负责人: David Yaron
• 金额: $ 25万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0443041&HistoricalAwards=false
• 关键词: Online; Systems; Support; Problem; Solving

Scaffolded homework activities provide students with hints and feedback on an as-needed basis and fade that help appropriately. Structured dialogues can help students analyze a complex problem to identify an appropriate approach and then, at the end of the problem solving activity, support them in connecting the experience back to their broader understanding of chemistry. While carrying out a computational task, the scaffolding can provide hints and feedback on student errors, and fade these such that the student remains challenged but does not flounder. Assessment efforts support creating new problem types based on virtual labs to improve student learning and highlight the need for better scaffolding of student problem solving. Online systems provide help as needed and increase or fade appropriately. Activities we support span a range from practice with computational procedures up to engagement in complex authentic problem solving, with the support structures varying and depending on the demands of the level. Bridges between computational practice and a broader conceptual understanding of chemistry is promoted through dialogues that prompt students to reflect on their problem solving and what they have learned.

支架式家庭作业活动根据需要为学生提供提示和反馈，并逐渐提供适当的帮助。结构化对话可以帮助学生分析复杂的问题，以确定适当的方法，然后在问题解决活动结束时，支持他们将经验与对化学的更广泛的理解联系起来。在执行计算任务时，脚手架可以提供有关学生错误的提示和反馈，并淡化这些错误，使学生仍然面临挑战，但不会陷入困境。评估工作支持基于虚拟实验室创建新的问题类型，以改善学生的学习，并强调需要更好地解决学生问题。在线系统根据需要提供帮助并适当增加或减少。我们支持的活动范围广泛，从计算程序的练习到参与复杂的真实问题解决，支持结构各不相同，具体取决于级别的需求。通过对话促进计算实践和更广泛的化学概念理解之间的桥梁，促使学生反思他们的问题解决和他们所学到的知识。