When she got it, my heart jumped. The third grade classroom
fell silent. Minutes before, I had been incessantly hammering the merits of
decomposers to the class as we worked our way through a series of lessons about
nutrient cycling. Now, a new note struck my throat, causing me to choke, but
just a bit.
The students, of course, did not notice that I could have
cried for the joy of true learning taking place in that moment. The short blonde haired girl in the back of
the class had described to the rest of us the path taken by the sun’s energy as
it works its way up the food chain. It was evident that this third grader had
suddenly grasped--and articulated--that this “chain” was much more of an
interconnected web than any of her classmates had realized before. But it
wasn’t just this revelation that started my eyes to watering, it was the way
that she concluded, “and then microbes break down the deer’s body and all of
that energy can be used again by other things.”
YES, that was it. This earth is the mother of all efficiency
experts. “ALL of that energy can be used again,” and again, and again… The
First Law of Thermodynamics, a concept that was just truly
grasped by a 3rd
grader, right before my eyes. The
conservation of energy is a wildly simple idea, but its applicability to the
nutrient cycling which keeps our planet in balance is ever important to
consider.
From the first activity I led with the third grade class to
introduce the concept of an ecosystem, when we each took on the role of a different
part of the garden’s food web and connected ourselves with a string of yarn into
an interdependent ecosystem, I had envisioned the moment when these students
would grasp this concept. The moment when a person realizes that we are fundamentally
stardust; that the atoms now giving form to our world are the same atoms that dripped
from pen to paper as Jefferson first wrote, “We hold these truths to be
self-evident.”
Barring myself from the existential pondering that began to
enchant me, I drew my attention back to the other hands that went up around the
classroom. A curly headed kid in the
back of the room piped up: “So, the sunflowers that died around the apple tree
could become a part of the apple that grows on the tree, and if I eat one of
those apples it could become a part of me?!” Yes, yes, yes! These students were
making the connections, and I, having little experience with the joys of
teaching, was beginning to understand just why they (the teachers) do it.
The week following the garden food web lesson, we picked through the bits of decomposing refuse that we had put into classroom compost bags, analyzing the outcomes of our experiment. I was wowed yet again at the connections these students were able to make and the advanced language they used to describe decomposition!
One rosy cheeked young boy, when asked why the pieces of plastic cup that we included in the classroom compost bags hadn’t broken down, promptly responded: “Plastic cups are not a natural resource!” “Well then,” I replied, “Plastic does come from a natural resource though. Plastics are made from crude oil out of the earth, a fossil fuel, like gasoline.” After some funny faces, the young, astute kid responded, “Yeah, but it’s man made.” And right he was. Plastics are nothing like the grapes or the kale that we had put into our compost bag. Slowly, the third grade students constructed the idea that soil bacteria don’t recognize these man made things, so the bacteria have to work a lot harder to decompose them.
The week following the garden food web lesson, we picked through the bits of decomposing refuse that we had put into classroom compost bags, analyzing the outcomes of our experiment. I was wowed yet again at the connections these students were able to make and the advanced language they used to describe decomposition!
One rosy cheeked young boy, when asked why the pieces of plastic cup that we included in the classroom compost bags hadn’t broken down, promptly responded: “Plastic cups are not a natural resource!” “Well then,” I replied, “Plastic does come from a natural resource though. Plastics are made from crude oil out of the earth, a fossil fuel, like gasoline.” After some funny faces, the young, astute kid responded, “Yeah, but it’s man made.” And right he was. Plastics are nothing like the grapes or the kale that we had put into our compost bag. Slowly, the third grade students constructed the idea that soil bacteria don’t recognize these man made things, so the bacteria have to work a lot harder to decompose them.
I leave the classroom each day amazed. As I walked into the principal’s office after class with a smile on my face and gratitude in my voice, he jovially reminded me that there are “not many jobs as rewarding and fulfilling as teaching. It is inevitable that those kids will say something that will turn your head and leave you with a grin.”
Written by Demetrius Fassas, service member in Ennis, MT with Madison Farm 2 Fork
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