Many General Assignment (GA) Classrooms on campus utilize High Definition (HD) technology with widescreen format for projectors and Flat Screen TVs. It is important to know how to adjust your PowerPoint slide size to take advantage of the wider format and project a better quality image.
If you are using PowerPoint 2013 and above, please follow the link below to visit Microsoft's tutorial to change the size of the slides:
http://office.microsoft.com/en-us/powerpoint-help/change-the-size-of-your-slides-HA102893534.aspx
If you are using Google Drive, Google Slides with automatically default to the widescreen 16:9 format. You may also change existing presentations by following the tutorial linked below:
http://support.google.com/docs/answer/3447672?hl=en