"foil slide" kenne ich auch nicht, aber "foil" fuer "Overheadfolie" habe ich umgangssprachlich schon oefter von englischen Muttersprachlern (AE) gehoert. Einige relevante Google-Treffer:
http://www.hull.ac.uk/engineering/projects/ ProjectInfo0304/OralPresentation0304.pdf
You are advised to have an OHP foil version of your presentation available as a backup in case of computer problems
http://www.cems.uwe.ac.uk/~dfairbur/ isac/Delia Notes/Presentation Skills.doc
Don't use too many words 25 words on each foil is plenty;
http://www.surrey.ac.uk/eng/InfoPoint/downloa... SE0204 PPT2b/SE0204 Presentation Skills 2 Notes.do
As a general rule prepare an OHP foil for each 2 minutes of your presentation, if it is less than 20 minutes in duration, [...]
http://lorien.ncl.ac.uk/ming/dept/tips/presen...Muttering over a transparency on the OHP projector plate an not realising that you are blocking the projection of the image. It is preferable to point to the screen than the foil on the OHP (apart from the fact that you will probably dazzle yourself with the brightness of the projector)
http://www.solihullspeakers.co.uk/EducationPr...One of our newest members then presented part of a business presentation she had given recently at her work. This was evaluated and various general points developed, taking in foil layout, handouts, laser pointers and presentation techniques.
http://www.soc.staffs.ac.uk/iceis/making effective presentations.html
The use of colour can make a text presentation easier to follow, but great care is needed in the selection of colours. Bad contrast and garish combinations make the foil difficult to read and therefore cause the audience to lose interest.
