Using Web Based Homework In An Introductory Engineering Physics Course

Working homework problems has always been an integral part of an introductory engineering physics class. Traditionally, the homework process has been an inefficient one which involved students writing solutions on paper, turning the papers in, instructors grading the papers, and returning the papers back to the students to provide for feedback and evaluation. This process is very time consuming for a large class, the resulting feedback is generally minimal, and it is difficult to control copying. This paper will discuss the issues, advantages, and disadvantages of a custom web-based homework system designed to replace the traditional paper-based homework system. This custom system implements most features found in other web-based systems such as creation and management of problem libraries, scheduling of assignments, presentation of the problems with randomly assigned parameters for each student, automatic grading, and providing statistics of results. In addition, this system addresses learning issues such as enhanced feedback, interactive help, documentation of the problem solving process, and the evaluation of the use and effectiveness of the system. Documentation and interaction is enhanced by allowing students to include their work in an online calculator/notes box associated with the homework so instructors can view the student’s work on the problem and assist with questions. Interaction and feedback is enhanced with a link directly to a web-based discussion forum which allows students to quickly access questions and answers on the assignment. To encourage homework completion, the system allows for multiple due dates with increasing penalties the later the homework is finished. One of the disadvantages of a web-based system is that it does not typically require students to write out solutions in a clear and logical manner. This issue has been addressed by requiring students to maintain a portfolio of written solutions to all homework problems. Portfolios are periodically checked for completeness and have proven valuable in helping students develop better organization and work habits. Overall, the custom web-based homework system has been in general use since 2003 and has proven itself to be an efficient and effective learning and evaluation tool.