This last Tuesday, Kitty and I headed up to the Swan Valley in the early morning. We sleepily arrived and set up for the field trip and waited for the kids to arrive. As the students rolled out of the bus, their enthusiasm for the field trip was contagious. This group of students had been going out on our WEN field trips every spring and fall since they were in 3rd grade, and were excited to learn more and build upon what they had already learned in the previous years. At the bug station, students excitedly ran over to me, eyeing the waders already. As we talked about the different kinds of aquatic macroinvertebrates in the river, I was surprised by how much the older students remembered. Finally, the students were able to get into the waders and collect the macroinvertebrates in the river. We found so many mayflys! We also found a couple of ‘mystery bugs’ that the students we able to identify through our dichotomous key. As they proudly told me what each bug was named, I was reminded that no matter how much we think we may know about something, we can always learn something new.