How do you teach students not just how a stream works and what lives in it, but also how to pass that knowledge on themselves one day? That was the focus of our recent course, “Hydrobiology for Environmental Educators.” It was built around two important goals: solid background knowledge, and the skill of teaching that knowledge to others.
Indoors and outdoors: theory and practice, side by side
Indoors, the course covered the basics: aquatic insects and bioindicators, the ecology of flowing and standing waters, and water quality. Armed with identification keys, students spent plenty of time at the microscope, learning to recognize and tell apart insect larvae and small crustaceans living in the water, along with the clever ways they’ve adapted to life there. Outdoors, that knowledge was put straight into practice: with nets, sieves, and identification charts in hand, students headed to the streambank to identify aquatic animals on the spot and carry out assessments of the stream’s morphological structure.
Knowing isn’t the same as teaching
Knowing that a high diversity of mayfly and stonefly larvae signals good water quality is one thing. As future educators, students also need to be able to pass that knowledge on to groups who may have neither prior knowledge nor much initial interest. That’s why part of the course was dedicated to teaching itself: how do you turn the science of water ecology into something engaging and easy to grasp for others?
The course ended with less of a fixed checklist and more of an experience: water ecology can’t be fully taught indoors, and field experience without a theoretical foundation only scratches the surface. It’s only by moving between the two that real understanding takes shape — the kind of understanding students will one day pass on themselves.
