Wed, Apr 13, 2022 8:36 AM in Sound Projects
I once had students try to design a soundproof box. I used a phone with the app Arduino Science Lab. It has a decibel meter in it. So just in case a school doesn't have sound meters (we didn't), it's a good substitute.
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Wed, Mar 02, 2022 8:48 AM in Pennies, Aluminum, and Vinegar reactions
I think is most likely zinc acetate (white) and copper II oxide (black), though if there are contaminants then we can't be sure. Also, if you added salt to the cups then it would also be excess NaCl left over.
Correct me if I'm wrong, but I believe a precipitate is specifically insoluble. If you had to wait for the liquid to evaporate, you are observing the dissolved solids, not a prec...
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Tue, Feb 15, 2022 11:14 AM in 3D Printing in schools
I don't know the age group, but if this is their first exposure to 3D printing, I can't recommend Tinkercad enough.
Tinkercad is a free website. All designs are stored in the cloud, so no need for downloading software. You can set students up as a class and you can monitor their designs. There are starter lessons for people totally new to design that teaches them all the different cont...
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