my suggestion:
1. convert the pp presentation to flash, then upload the presentation
to a website. ask your teacher to visit the site to view. or, ask your
teacher to download a flash player for mac, play the flash (it requires
more work, if your are interested, write me an e-mail,
)
2. convert the pp presentation to DVD(it will take a long time), burn a
dvd disk, give it to your teacher.
3. if possible, invite your teacher to visit your dorm or the place
that can access a windows pc and convenient for both of you, play the
pp for him/her.
hope this helps
best wishes