Last Saturday I had to present at a regional science teacher's conference. It was the first time presenting for me, and besides being extremely nervous and having one of the wife's cats throw up on part of my presentation, everything went Ok.
I decided I would do a presentation on how to make a hovercraft. Riding around on the hovercraft, and experiencing Newton's laws firsthand, is something the kids at my school ask to do all the time.
I built a new one, taking pictures of every step along the way and I created a Powerpoint presentation on how to do it. Many of the teachers present looked at me like I was crazy when I tried to get them to ride it, but a few were brave, I gave away all my CDs with my presentation on it, and I have to email it to a few more people.
I did have one weird moment. It reminded me of when I was a first year teacher and I looked around at my classroom and realized I was the adult in the room. Presenting for the first time is very much like that.
I've posted the presentation on one of the free file hosting sites. I don't know if this will actually work or not, but if you'd like to see it you can view it here