Starting a Hangout
Click on New Hangout. Begin typing in the Google Apps address(es) of the individuals you wish to invite to the Hangout. As you type each address, the participant's picture will appear. Click the check box next to their name to add them to the list of invitees.
Joining a Hangout
Best Classroom Practices
When your class is not speaking, mute the microphone on your computer (see image). It will make the audio quality of everyone's experience better. When a student from your class is finished speaking, make sure it is clear he or she is finished by saying "thank you" or asking a question directly to another participant. Assign leaders for each classroom to keep the discussion on track and help everyone participate.
For students older than 13 who have access to Google+ and Hangouts, discuss how this is a great tool for school. They can collaborate at home, share their screens to help each other solve technical problems, and socialize. Caution them that it can also be abused though. Bullying, hazing, and excluding others are not respectful ways to use Hangouts and will not be tolerated in or out of school. Connecting with strangers outside of the ASFG community can also be dangerous. Discuss strategies for staying safe with students who access Hangouts.
The Google+ Community Mystery Hangouts for Schools is where teachers meet to organize Hangouts in which students must guess the others' location.
Hangouts on Air allow you to record a Hangout as a YouTube video and share it with specific people or the world.
Find more resources on the Lee's Summit School District Hangouts Guide for Teachers page.
Making the most out of Hangouts in education Edutopia article.