.pot file extension
They are used to create more PowerPoint files with the same formatting and later got replaced by .potx files.
Pop-up events only last for a short period of time, such as only for one night or one month. An example: Another location of a shop is opened for only one month to extend the reach.
.ppt file extension
A .ppt file is a presentation which was made with PowerPoint, that includes different slides with texts, images and transition effects.
Classroom Communication System (CCS)
A Classroom Communication System allows students and teachers to communicate efficently online. It improves students' engagement as they are animated to ask questions, give feedback and take notes. There are various companies that offer CCS solutions.