knitgrl

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March 17, 2017 at 5:57 pm in reply to: How to build a balloon power car #1489

knitgrl
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The demonstration in the link below clearly illustrates the Third Law of motion.

https://teaching.wonderhowto.com/how-to/demonstrate-newtons-third-law-motion-223910/

February 26, 2016 at 4:30 pm in reply to: Error in text re magnetic fields going through iron #838

knitgrl
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We had difficulty with this demonstration as well. The paperclip was attracted to the horseshoe magnet through the can. Our unlabeled horseshoe magnet appears to have the same pole and both legs and the opposite pole at the curved part. Does anyone know where to find a good horseshoe magnet?
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