I've worked with entomologists for 15 years now, but I'm not one. I started my job in the year 2000 not knowing that spiders weren't insects (I'm a little embarrassed to write this, but it helps to emphasize my point). Over time I've gathered enough knowledge so that I can talk in very broad strokes about insects, just enough to get them jazzed about the science. And that is just what kids need at this young age of exploration.
On the field trip, the staff of Arlington Echo (an outdoor education division of our county's public school system -- yes, we fund that!) came up with a great child-focused stream survey for macroinvertebrates. I was tasked with leading this activity. The kids used pipettes, spoons, ice cube trays, and flashlights to look through the leaf litter to find everything from cranefly, caddisfly, and stonefly nymphs to sowbugs and midges. They really seemed to "light up" when told that this activity was exactly the kind of thing that a professional scientist does and that their research was going to become part of the recorded science at the facility. At first when they poked through the watery leaf litter they could not find anything, but as they started to adjust away from preconceived notions of what an insect SHOULD look like, patience and perseverance began to pay off and most of the kids were able to find the creatures.
We're all teachers. Some of you get paid for being