Collaborative Research: Screencasts for Enhancing Chemical Engineering Education

这个TUES 2型项目的目标是通过完成一个简短的，经过验证的截屏视频库来改造本科化学工程教育。 每个屏幕播放不到10分钟，包括旁白。 屏幕播放提供了一种个性化的学习方法，使学生能够控制信息传递的速度和时间。 先前的研究表明，屏幕录像有助于最大限度地减少认知负荷，增加学生的信心，并允许学生控制他们的学习。 该项目的目标是：1）为化学工程课程准备屏幕录像并在线提供，2）聘请专家验证屏幕录像的质量和准确性，3）评估屏幕录像的有效性，评估教师和学生的使用情况，并采用评估结果来改进屏幕录像，以及4）通过支持教师采用屏幕录像并增加学生使用的便利性来扩大使用。位于博尔德的科罗拉多大学的这个项目团队正在为12门本科工程课程创建800多个新的屏幕视频，以添加到现有的750多个屏幕视频库中。 主题有一个化学工程的重点，但主题和跨工程学科的课程都包括在内。 短片是根据概念图和教科书目录组织的。 与拉斐特学院合作，对屏幕播放进行评估，以告知改进情况，并提供有关屏幕播放对学生学习和屏幕播放使用和采用的影响的宝贵信息。这个项目的更广泛的影响在于有可能接触到大量的工程专业学生和教师。 2012年，在线提供的现有屏幕播放或下载次数超过125万次。 此外，430多名教师已经注册了www.LearnChemE.com网站。 对于从隐藏式字幕选项中受益的学习者，如听力受损或英语作为第二语言的学生，屏幕录像也是一种资源。 此外，有阅读障碍的学生可以使用屏幕录像来补充教科书，因为屏幕录像中的信息是口头呈现的，因此他们更容易理解。

The goal of this TUES Type 2 project is to transform undergraduate chemical engineering education by completing a library of short, validated screencast videos. Each screencast is less than 10 minutes and includes narration. Screencasts provide a personalized method of learning that empowers students, giving them control over the rate and timing of information delivery. Previous research shows that screencasts help minimize cognitive overload, increase student confidence, and allow students to take control of their learning. The project objectives are to: 1) prepare screencasts for chemical engineering courses and make them available online, 2) engage experts in validating screencasts for quality and accuracy, 3) assess screencast effectiveness, evaluate faculty and student usage, and employ assessment findings to improve screencasts, and 4) expand usage by supporting faculty adoption of screencasts and increase ease of student use. This project team at the University of Colorado at Boulder is creating more than 800 new screencasts to add to an existing library of more than 750 screencasts for twelve undergraduate engineering courses. Topics have a chemical engineering emphasis, but topics and courses that reach across engineering disciplines are included. The short screencasts are organized according to concept maps and textbook tables of contents. In collaboration with Lafayette College, evaluation of the screencasts is conducted to inform improvements and provide valuable information on the impact of screencasts on student learning and screencast usage and adoption. The broader impacts of this project lie in the potential to reach a large number of engineering students and faculty. The existing screencasts, which are available online, have been played or downloaded more than 1.25 million times in 2012. Additionally, more than 430 faculty have registered for the www.LearnChemE.com website. The screencasts also are a resource for learners that benefit from the closed captioning options, such as hearing-impaired or English as a Second Language students. Moreover, dyslexic students can use screencasts to supplement textbooks since the information in the screencasts is presented verbally and thus can be easier for them to understand.