This year my 9 year old son is in a class that has different dads teach each time. First the dad will talk about his work and then do a devotion. So far they had a fire fighter (who brought his fire truck!), a police officer, pastor, and carpenter. Yesterday, a scientist from a national lab brought part of a supercomputer and let the boys take it a part.
I love it when dads get involved and share their expertise. My husband and his friend have taught computer programming to home-schoolers at different times over the years. Who knows how many future scientist they have inspired?!