They were made out of juice cartons with dowel. The better the windmill, the more pennies it could lift in the cup hanging off the back. Some were quite efficient, but others did not move. That is why there is the "Improve" step in the design process. In the end, they all worked to some extent. The greatest amount lifted was 100 pennies. As I said, that one made a lot of 'cents'!
The next step was following and writing procedures. Of course we had some fun with this one. Take an egg beater, bowl and rollingpin out of a bag and use each of the utensils. They did not always say 'hands'!
There was a procedure given for cookie cutting.
Then they gave a procedure for sticker arrangement.
I wasn't giving anything away!
Next we we going to talk about environmental engineers so we took them all to the EPICS constructed wetlands. They were basically a set of settling ponds next to corn, soy and pig farms to take the nutrients out of the water before it flowed to the creek. Water was pumped in one end and gravity did the work through the ponds and out the other end.
"Get in there!"
These, that I had never actually seen before, are elderberries! Go ahead, quote Monty Python to your geeky heart's content!
These are the 6 ponds flowing towards this end.
Stay tuned to see us putting environmental engineering to the test in the classroom!
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