This document provides an overview of a presentation on tech tips for the classroom by Kathi Wong. It includes information on how to access the presentation materials through her blog or SlideShare account and how to contact her with questions. The document then covers several potential uses of Twitter in the classroom and examples of assignments involving Twitter. It also lists some apps that can be used for activities like timing presentations, taking attendance, and annotating PDFs. Contact information is provided at the end for accessing the materials.