How to scan 35mm slides?

We have boxes of 35mm slides taken in the 70’s and 80’s and I would like to digitize some of them. Our slide projector, the one with the carousel,(remember those!) sort of works and I could go through the slides that way to select what I want scanned. But what do I do after that?

You can’t scan a slide directly, the scanner does not enlarge the slide. Our scanner does not have a slide available.

Any ideas?

Thanks

SRM