4) Math on Dusty, Cold Chalkboards. There are a few schools that still feature the old-fashioned chalkboards, but what we've seen lately are either marker boards or these things that are fully electronic. No more dusty hands and that terrible scratching sound!
5) Going Crazy at Recess. The playgrounds these days certainly don't resemble the metal and wood structures of our youth. We'd spin as fast as we could and swing as high as we could and would head back in to school worn out. And we all survived!
6) Learning Baton Twirling. This one is a little bit random, but we certainly learned this skill in gym.