Collaborative Research: Screencasts for Enhancing Chemical Engineering Education

这个TUES Type 2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变本科化学工程教育。每个截屏视频不到10分钟，并包括旁白。录屏视频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。此前的研究表明，录屏有助于将认知负担降至最低，增加学生的信心，并允许学生控制自己的学习。该项目的目标是：1)准备化学工程课程的截屏录像并在网上提供，2)聘请专家验证截屏录像的质量和准确性，3)评估截屏录像的有效性，评估教师和学生的使用情况，并利用评估结果来改进截屏录像，以及4)通过支持教师采用截屏录像和增加学生使用的简易性来扩大使用。科罗拉多大学博尔德分校的这个项目团队正在制作800多个新的截图，以增加现有的12门本科工程学课程的750多个截图。主题侧重于化学工程，但也包括跨越工程学科的主题和课程。短片是根据概念图和教科书目录编排的。与拉斐特学院合作，对截屏录像进行评估，以提供改进意见，并提供有关截屏录像对学生学习以及截屏录像使用和采用的影响的宝贵信息。这个项目更广泛的影响在于有可能接触到大量的工程学学生和教职员工。现有的截屏视频可在网上获得，2012年已被播放或下载超过125万次。此外，已有430多名教职员工注册了www.LearnChemE.com网站。这些截屏视频也是为受益于隐藏字幕选项的学习者提供的资源，例如听力受损或将英语作为第二语言的学生。此外，阅读困难的学生可以使用录屏来补充教科书，因为录屏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.