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Unit Starts Tomorrow!

by James Wampler
(Shelbyville, Ky. USA)

Solar Cooker Array  (of power?)

Solar Cooker Array (of power?)

I have been getting ready with my classroom DevGru to present our Solar Cooking unit to the rest of the class.

We are connecting it to standards MS.ESS3.4 and MS.ESS3.5

MS.ESS3.4 Students need to make an argument based on evidence that increases in populations and per capita consumption of natural resources impacts earth's systems

MS.ESS3.5 Students need to be able to ask questions to clarify evidence of the factors that have caused the rise in global temperatures over the past century.

With this being our first year, we moved a little slower than I would have liked. We also lost about 6 days to snow that (thankfully) we don't have to make up.

Students tested some of their designs last week, but while I had thermometers, we could not locate the oven bags or anything to cover their ovens the final DevGru testing will be this week. A student did send me a picture of her first box oven, which reached 160 degrees F.

Currently, I can't get the ASSC up to anything above 250 degrees. I attribute this at least partly to the fact that I still haven't found anyone with a saw and free time that could put a nice notch in the wood.

Maybe I'll just buy a hand-saw and a vice or something :)

The instruction and construction *should* go smoothly. I am getting more nervous about having favorable weather for the end of the year. Currently trying to find ways that students can test their units in the classroom if they have to.

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May 05, 2015
Sun site etc.
by: Jim La Joie

Regarding the sun-sight. No groove required. Just a 30º cut on one side of your block. Miter box and backsaw will work.
I would like to send you one but still need your address. Free to support your efforts.
The international standard for solar cooker performance is "how quickly can you raise the temperature of a liter of water"
If you are measuring duration potential, you would add the caveat "how soon can you raise the temperature of a liter of water"
I will donate 4 or 5 excellent bags if you contact me. 760 695-2104.
Great contest. Have fun

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