Science class- experiments outside

[elbirth]

I haven't posted really any photos lately, mainly because I haven't been able to get around to really shoot anything... however, before I moved back to campus this weekend for the start of the new semester, I got a chance.

One of my brothers is teaching at our old high school, teaching some science classes (Physical Science, Chemistry and AP Environmental Science). He's going to be making a class website and wants some pictures of his class to put up, so I went to school with him one day last week while they were doing some initial experiments outside in his Environmental Science class. These aren't overly great, but I was kind of happy with how they turned out considering the overcast conditions.

Comments?

All shot with the 20D and 50mm f/1.8

A few students crossing a shallow part of a creek
http://www.heycubed.net/imageupload/userfiles/elbirth/APES1.jpg

More students going into some woods
http://www.heycubed.net/imageupload/userfiles/elbirth/APES2.jpg

Student taking water temperature measurements
http://www.heycubed.net/imageupload/userfiles/elbirth/APES3.jpg

My brother/the teacher getting some creek water to do a titration with later in the class room.
http://www.heycubed.net/imageupload/userfiles/elbirth/APES4.jpg

[Dimitry]

Some good shots in here :)
What grade(s) does he teach?

[elbirth]

I think that class (Environmental Science) is 11th grade, and he also teaches 9th (Physical Science) and Chemistry is 10th, I think, but not entirely sure.