Asia Society and EdSteps created a book explaining Global Competence, providing matrices, action project ideas, and examples of global education in the classroom. http://www.edsteps.org/CCSSO/SampleWorks/EducatingforGlobalCompetence.pdf
The Australian government produced this framework for global education, which includes a step-by-step process of globalizing curriculum, and a checklist for current curriculum. http://www.globaleducation.edu.au/verve/_resources/GPS_web.pdf
Epals is a platform for teachers to connect with other teachers to find epals for their students or international collaboration on a project.
Global Dimensions has tools to look at various levels of the educational system to see how global it is; this is their top 10 tips for making education global.http://clients.squareeye.net/uploads/global/documents/gobal_dimension_top_tips.pdf
Oxfam UK has a number of resources for classroom teachers for global education, including this booklet that has a matrix of skills (pp 4-7) to be taught at each age.
Peace Corps World Wise Classrooms connects teachers and classes with current Peace Corps volunteers for correspondence. There are also a number of resources on the website.
http://www.peacecorps.gov/wws/
Saudi Aramco puts out a magazine called Saudi Aramco World which focuses on the culture, history and geography of the Arab and Muslim world. It is free and there are also virtual walking tours and an extensive database of images and articles at the website.
Teach UNICEF has a variety of lessons and multimedia resources about global issues, organized by topic or grade level.
Teacher Travel (linked from this page in the side bar) is an extensive list of free (or inexpensive) travel opportunities for teachers.
https://sites.google.com/a/mdsmn.org/teacher-travel/
We Explore is an online adventure learning environment where students make and research their own adventures or look at other adventures.
What better way to bring in global perspectives of current events than to read newspaper articles about the event from other countries?
http://www.world-newspapers.com/