Rhythmic thunder? (Hail cannons)

Sunday, April 1st, 2007

Recently, we heard what sounded like very strange thunder during a rainstorm. It didn't sound like ordinary thunder because it was so rhythmic. After reading this article and hearing this story on NPR, I discovered several things: It wasn't thunder. It was a "hail cannon". The "peals" likely were about 4 seconds apart. The ...

Layers of the earth picture!

Tuesday, September 26th, 2006

I don't know how much cross-posting I should be doing, but I had to share this with this audience, not just my students & parents. In my class, we've been talking about the layers of the earth, leading up to the concepts of plate tectonics. One of my students did a ...

Pluto – No longer a “planet”

Sunday, August 27th, 2006

As I was preparing to write a post on this topic, I thought for a moment about what would be the best destination for my thoughts. Should I put it on my classroom blog, with my students and their parents as the primary audience? Should I put it on "Teach ...