Show, don't tell. Provide an opportunity, guide them through solving interesting problems, set up the problems in ways that can appeal to them: competitions like FIRST Robotics; real world connections like rudimentary or introductory mechanical and electrical engineering and how it can solve their problems.

I can tell my functional programming hating program lead all day that it's great and very applicable to what we do, or I can write up a program we've been needing for months in two days and 200 clear lines versus the 2000 line C# version that's still got bugs in it.