The only way in which Photoshop Elements could help with this is in creating graphics to use on your slides. For Premiere Elements, you'll get better answers in the PRE forum:
Well it's presentation software you need. In the commercial product range Microsoft PowerPoint is ubiquitous, but if you need a free alterative OpenOffice includes the Impress component and is available for both Mac and Windows (as well as Linux).
PSE and PRE can create the images and videos that you can then incorporate into those presentations, typically by dragging the source file into position on a blank slide in the presentation software.
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