An eTwinning Project (2009/2010)
It is a very interesting experiment. Here you can see another way to do it.http://fq-experimentos.blogspot.com/2008/09/moneda-saltarina.htmlGreetings from Spain
José María Benítez said:Hello, congratulations on the experiment! I liked it because it's been interesting to see how the bubbles ascended the bottle. I hope that soon we do experiments for their opinion.