PDF stands for portable document format.  These files require Adobe Acrobat Reader which is available for free.
If you CANNOT view the pdf documents, you may get the required plug-in at: http://www.adobe.com/products/acrobat/readstep2.html.

This website opens PDF files in a new window.  If you have a pop-up blocker installed, it may block this action.  Instead can right-click on the PDF link and select the Open in a New Window command.

After you open a PDF file, you can view it, save it , or print it. 

To save a copy of a PDF file:

1. From the browser's File menu, select Save.

2. Give the file a name.

3. Click the Save button.

To print a copy of a PDF file:

1. From the browser's File menu, select Print.

2. Click the Print button.

To return to the Virtual STEM Fair Portal:

1. From the browser's File menu, select Exit.

Note: PDF files can not be edited without special software.