| The Density Demo (html) | The Density Demo to demonstrate Density and Buoyancy from PHET.colorado.edu labs. |
| Tips on using the Density Demo (printable) | Tips on using the Density Demo in the Density and Buoyancy Workshop (download) |
| Tips on using the Density Demo (online version) | Tips on using the Density Demo in the Density and Buoyancy Workshop (clickable) |
| The Density Demo (flash version) | Flash version of the Density Demo from PHET.colorado.edu (requires flash version 8 or later). |
| Tips for running the Density Demo (flash version) | Tips and narrative for using the flash version of the Density Demo from PHET.colorado.edu . |
| Area-Volume activity | Surface Area and Volume JavaScript activity from Shodor Interactivate series. |
| Volume applet (Java version) | Java based Volume applet available from Shodor resources. |