This document discusses how teachers can use Skype and Google Hangouts to open their classrooms and collaborate with other classes. It provides examples of how these tools have been used, such as skyping with poets, hosting a poetry slam with other classes, and collaborating on an Iowa history project. Tips are provided on setting up successful video calls, including preparing students, setting goals, and troubleshooting technical issues. Teachers are encouraged to be creative with uses like book clubs, science fairs, and connecting with other educators.