Avogadro's number, 6.02 followed by 23 zeros, is a concept used in chemistry that is really hard for students to wrap their heads around. If you have 6.02x10^23 atoms of an element or molecule, you have a mole. And a mole is something you can work with. It's a bit like having a dozen eggs.
But, it's a really big number to visualize. Mole Day (10/23 - get it?) is a way to focus on helping students to understand this central concept in chemistry. Eppie's classes drew pictures of moles in zeros - one for every place value in Avogadro's number - and also weighed out a mole of pure aluminum and formed the foil into the shape of a mole. Great stuff! Students also visited the Kelsey Museum of Archaeology at U of M to learn more about ancient world cultures. All in all, a great day!