*There are only 2 primary tools for this theme:*
Ideas for in your Classroom:
World Peace Game: http://www.edutopia.org/blog/world-peace-game-john-hunter
Current Events: Look at something that's dominating the news and apply it to what you are teaching. (Use severe weather outbreaks and environmental disasters to illustrate everything from climate patterns to the logistics of coordinating relief efforts.)
Skype people from areas around the world.
Try playing Holiday Clay with your class to bring together multiculturalism and some tactile fun.
Weather around the world: http://www.timeanddate.com/weather/
Participate or host a world culture day-food, art, music, games, literature, language
BING - Even though this is primarily a search engine, it can be used in your daily classroom! I used it as morning work with EOG Question Stems. The students had to think of 3 questions from "Text", "Text to Self", and "Text to World" that had to do with the image. Then we would learn about the image and they would fill in any answers that pertained to their own questions. You can also use it with the Publisher document that is attached at the bottom of this page. It deals with geography, current events, facts, background knowledge, etc. The possibilities are endless! https://www.bing.com/
Multicultural Education Activities
Learn another language!
Great articles to check out that compare "traditional" classrooms of the industrial age to today's global classrooms.