Development of Interactive Examples for Concept-Based Problem Solving in Introductory Undergraduate Physics Courses

（13）传统的物理入门课程通常不能显著提高学生对物理的概念理解和态度。最近，几个小组通过应用物理教育研究的见解来改进课程内容和教学方法，改进讲座、实验和背诵部分，在这些领域取得了重大进展。本项目以从物理教育研究中获得的知识为基础，通过技术和教学的精心整合，解决了本科物理教育中剩下的关键组成部分——家庭作业问题。该项目的主要目标是创建教学材料，学生在物理入门课程中可以使用这些材料来开发基于概念分析的问题解决策略。特别是，该项目正在创建一套完整的（总共约60个）基于研究的“交互示例”（IEs），可用于本科院校基于微积分的物理入门课程。这些ie是基于网络的练习，积极地让学生参与到苏格拉底式的对话中，旨在帮助他们发展一种基于概念的策略来解决家庭作业问题。开发的问题解决了记录在案的学生困难，并与马萨诸塞大学和华盛顿大学的研究人员合作指导。这些新的ie还利用了以前成功开发的基于代数的物理入门课程的经验教训。目前正在对新课程在提高学生对基本物理原理的功能性理解方面的有效性进行定量评价。最初将向社区学院和同行机构分发这些手册，并在项目过程中进一步改进分发工作。

Physics (13) Traditional introductory physics courses typically fail to significantly improve students' conceptual understanding of, and attitude towards, physics. Recently, several groups have documented significant improvements in these areas by applying insights from physics education research to improve curricular content and instructional methods for lectures, labs and recitation sections.This project addresses the remaining critical component of undergraduate physics education-the homework problems-with a careful integration of technology and instruction, based on knowledge gained from physics education research. The primary goal of the project is to create instructional materials that students in introductory physics courses can use to develop problem-solving strategies based on conceptual analysis. In particular, the project is creating a complete set (about 60 total) of research-based "Interactive Examples" (IEs) that can be used in introductory calculus-based physics courses in undergraduate institutions. These IEs are web-based exercises that actively engage students in a Socratic dialog designed to help them develop a concept-based strategy to solve a homework problem.The problems developed address documented student difficulties and are guided by collaborations with researchers at the University of Massachusetts and the University of Washington. These new IEs also exploit the lessons learned from previous successful development of IEs for introductory algebra-based physics courses.Quantitative evaluation is being done of the effectiveness of the new IEs in improving students' functional understanding of basic physics principles. Initial dissemination of these IEs will be to community colleges and peer institutions, and further dissemination is being refined during the course of the project.