Dry Ice, and Bubbles

This is a science teacher who makes lots of videos on youtube about dry ice.

Check out these videos:

http://www.youtube.com/user/mrbrunnerutah#p/a/f/1/76CNkxizQuc


http://www.youtube.com/user/mrbrunnerutah#p/u/20/gNdoUCgRXYoh