How to Recover PowerPoint Files on Mac

I am working on a college assignment and I create courseware each day, so PowerPoint is very important for me. Last hour, I just finished one ppt file, and decided to transfer it to my USB drive, at that moment, my computer turned to black without any signal. When I reboot my Mac, I got nothing on my USB drive, and my PPT file was lost on Mac, there was nothing in the Trash! What make it happen? How can I recover PowerPoint files without re-creating it?
Some people suggested me to retrieve lost ppt on Mac by downloading a professional data recovery software for Mac, and I did it, most of them were so complicated to operate, I am layman of computer and technology, is there any related simple method or tool for me to allow me to get ppt files back as soon as possible?

Recover PowerPoint on Mac

1. Install uMacsoft PowerPoint Recovery and launch
2. Scan partitions to find lost files
3. Preview and save what you deleted or lost data

Note and Tips

You cannot recover the files to the same drive where they were lost, therefore choose another volume or some external storage device such as a USB flash drive to save them safely.

In order to avoid repeating recovery job to find your gone files, you'd better mark your important files as read-only, or make copies of them periodically.
How to make your audience interest your PPT

Getting an audience interested in your presentation is a challenge. No matter the technology used, whether it's a PowerPoint, whiteboard, graphs, or other visual aids, it's your delivery, preparation, or lack of it that will impinge on your performance. Some suggestions for you to make your PPT be interested by listeners.

1. Good presentation material.
2. Good reporting.
3. Great speakers.
4. Lively participants.

The speaker (already introduced) starts by telling the audience what he is going to discuss. During his discussion, he guides the audience by telling them that he is now ready to launch on the second or third or last part of his presentation. All the while, he invites people to ask questions.

He repeats what he has said as if driving the idea and embedding it into their minds. He does not only tell, but shows how things are done. To find out if people are on his wavelength, he asks questions, not only to test their comprehension, but to gauge the level of the audience interest as well.
Make Your Report Dynamic

It does not mean you don't have to spruce up your PowerPoint presentations. Don't make the mistake of cramming all the content in your slides. Your slide should serve as a clue to what you are going to elaborate. Remember the guy who read his slides without making eye contact with the audience? He might feel boring.

Make an outline of your PowerPoint presentations while never losing sight of your objective. Guided by your plan and your thorough preparation (even a dry run to get an estimate of how long you're going to present your ideas), you can be confident to engage your audience.

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