Led School Science Teachers in Probeware use for Gas Laws

I began this lesson with one of my Discovery videos on Gases and used clips to remind my "students" of the differences between the phases of matter.  I went on to stream an exerpt from each of videos 901 to 903 just to give each instructor a feel for the materials available to them.  Finally I gave each a TI 84 Plus, Vernier materials to measure gas pressure, and I led them through 2 labs that they could do with their students using the calculators and the CBL's or the Computers.  One of the experiments was Biological and dealt with exhaling.  The other involved a chemical reaction in which pressure was changed.  In total there were 5 "students" in my class, one of whom has tried one of the experiments already.