Things I learned from my students: Lab 5

So, this lab we looked at the concentration of calcium in water using complexation titration. All you really need to know about complexation titration is that the complexation agent is that it hugs the thing it interacts with. So, the things I learned:

1. Complexation titration was used during World War II to treat Arsenic poisoning. This is actually a fact that I like. Two students have told me, but only one told me well.
   
2. Apparently it can also be used to measure the concentration of heavy metals in oysters. This gem comes from the young lady who told me that 4 people every year die from electromagnetic radiation from their bed partner. She also has an awesome SWE (Society of Women Engineers) t-shirt about how engineers are better partners.
   
3.  My students have no idea what "One complete set of calculations for a trial" means. Most of them seems to think that this means you show me 1 calculation for 3 trials, or 3 calculations for 3 trials. I thik I got 2 students who gave me the calculations correctly.
   
4. No matter how much time I spend on it, my students STILL do not understand significant figures.
   
5. I have VERY high expectations for my students. I'm grading St. Pat's reports, and they are SHIT. Mine are bad, these are crap.
   
6. Good Will Hunting is a good movie for grading. Early Matt Damon, early Ben Affleck, early Casey Affleck, and Robin Williams.