Shockwave and Flash
Our site uses both Shockwave and Flash
plugins to create the interactive content which appears
in your browser.
You should see a rocket animation in
both the Shockwave and Flash tests. If you do not see
an animation for one of these, click the Get Shockwave
or Get Flash button to obtain the latest version.
Worksheets in PDF Format
Many of our printable worksheets are distributed in PDF format. On a Macintosh computer runing OS X you should be able to view and print these worksheets without any additional software. Other computer systems may require you to download the Adobe Reader application. Click below to download the reader from Adobe's website.
Minimum System Requirements
For our interactive content to work
acceptably, you should be using a system which matches
or exceeds the following: