We had our last session of CSI yesterday and I was sad to see it end.  I hope the kids had as much fun as I did.  It was great to watch their faces as we did some of the experiments.  Yesterday's experiments were all about straws.

Can you make a trombone using a straw and a bottle of water?  These kids did.

After seeing this one a student stated that the straw looked like "a set of stairs".  I thought that was a great way to describe it.  I hope you can see it in the picture.

It's straight, it's bent, it's fat, it's thin....How can this be?

We talked about the fact that light travels at different speeds through different things and that's why this straw looks so crazy.