How I use the cosmic e-Lab in my IB classroom (3-day lesson plan)

Here is a Google Slides presentation about a 3-day lesson plan I did with my IB Physics seniors with the cosmic ray e-Lab. I have a muon detector in my classroom, so we use that, but you don't need a physical detector to do this lesson sequence -- you can just grab data from the e-Lab website from schools around the country.

This lesson was in conjunction with our unit on Special Relativity. The purpose of this lesson sequence was to illustrate one famous piece of experimental evidence which is in agreement with the very non-intuitive notions of time dilation & length contraction. In other words: how do we know this Special Relativity stuff is true?