Dietrich Ayala have just given a presentation to 120 4th graders, as a participant in Career Day at Lowell Elementary School in Long Beach, California. In the presentation he covered some general intarweb topics, places where he worked, and then talked about Mozilla, Firefox and open-source software. I found it an excellent experience and really thanks to Dietrich for sharing such great information. To conclude he said :

Overall, the kids seemed conversationally literate about the internet, more so than I was expecting. There was a general feeling that the internet was cool, but to be feared. They were definitely interested in Firefox, and asked where they could download it. They loved the Firefox stickers I gave out.

You can get slides from here [PDF].