I thought I would share a popular resource that I know many teachers are using to help them teach geography, social studies, earth sciences, and other subjects:
Rand McNally Classroom.
This is a subscription service but offers a FREE 14-day trial. See http://www.randmcnally.com for 14-day FREE online trial.
Rand McNally Classrsoom is an award-winning website loaded with easy access maps of all (18,00+) types of reference & history maps, online atlases, games, activities, lesson plans, current events, reference articles and teacher tools (including "Traveling Teddies" postcards, "Where in the world?" photos, etc)..
Rand McNally Classroom is content rich, and very user - friendly for teachers and students!