I don't have a lot of experience going on field trips, but the one I do take with my Oceanography students is to a local marine center, and I find it to be very informational for the students. I beleive this is a really valuable experience for them because it makes what we talk about a little more relevant to them. For example, we learn about a lot of different types of marine equipment such as a secchi disk, but this means very little to them becuase they don't have a great understanding of what it is. Whenever we go to the marine center, they actually get to stand on the peir and use one which makes it much more relevant to them and they are much more engaged. I provided them with a set of questions I wanted to them to think about as we went through the program, and then had them reflect once the trip was over. I found that for the most part studetns were really engaged in the material, and they truly had some great reflections and make lots of connections to things we had been learning about in class.