To download any of these presentations, make sure you're using a high-speed Internet connection since the file sizes are quite large.*  Then, right click the link and select "save target as."  Once it is saved on your desktop, unzip the file and click on the html document inside the folder that appears. 

Textual Intercourse: Using PowerPoint to Produce Interactive Movies for Effective Online and Web-Enhanced Instruction (25 mb)

The Shifting Paradigm: Transmission- to Transaction-based Pedagogies as an Effect of the Appropriate Use of Educational Technologies in the Generation of Dialogic Teaching and Learning Environments (32 mb)

Secondary Orality: Synchronous Semblances in Asynchronous Environments (29 mb)

*These presentations were created using Microsoft Producer, which is a free download from Microsoft.com provided you have PowerPoint XP or higher and Windows 2000 or higher already installed.  If you have neither, then your effort to open one of these presentations will be met with an offer to download a PowerPoint 2003 viewer.  You'll also need Windows Media Player if you don't already have it.  Finally, the program promises to work on Mac OS X and its variants.  Email me for help if you need it.