Part 2 on Significant Figures and Density has several assignments; 2 pages on sig figs, 2 pages on Density, and a lab page using lemons and limes. You can download this assignment via my google drive: https://drive.google.com/folderview?id=0B754cQ-atnw0d0M3djQxWTlDdHc&usp=sharing
Source: Bob Grove
Another great video from Paul Andersen and Bozeman Science
Source: Bozeman Science
An amusing look at sig figs.
Source: Mark Rosengarten (http://www.youtube.com/user/MarkRosengarten?feature=watch)
Uploaded on Dec 8, 2010
For years we have been making seven layer density columns. We challenged our team to not only add two more liquids, but add seven objects that would float at different levels. The outcome... the Amazing 9 Layer Density Tower!
Source: Sick Science