All presentations and handouts are in pdf format. Click here for the latest version: 
How to print multiple slides on one page in Adobe Reader:
- File > Print
- Find Page Handling in the print dialog window
- Select Multiple pages per sheet from the Page Scaling drop down menu
- Choose the appropriate number of Pages per sheet
- Click OK
If these options are not available in your version of Adobe Reader, please click the above link to upgrade your software.