There are several ways to make prints from slides:
Ilfochrome prints (used to be Cibachrome): a method where dyes in the paper are bleached out after exposure.
Kodak R3/R3000: a method similar to printing negatives, but with a reversal exposure step added.
Copy the slide to negative film and print from the negative (only works well for 4x5 or larger).
Digital scans and printing with inket or digital prints onto color photographic paper.
Take a negative picture of the slide projected on the wall. Not the best for quality.