The Fermi Project is as much fun for teachers as it is for those students that embrace it. Fermi questions are ridiculous math-based questions to which nobody really wants to know the answer, but that's half of their charm. The other half is that this is a REALLY good skill to teach our students. It requires problem solving skills, critical thinking skills, research skills, but overall the major skill therein is making educated guesses and how we learn to truly make them EDUCATED guesses. And th