American Museum of Natural History
American Museum of Natural History: Surveying Archaeological Sites O Logy Card
Find fast facts about surveying archaeological sites by flipping over this interactive card. Also, answer quiz questions to test your knowledge about mapping and measuring.
NASA
Nasa Earth Observatory: Land Cover Classification
Learn about the important resources our land offers us: food, water, oxygen, building materials, and more. Discover how scientists have been mapping land for years trying to prevent disasters and to collect environmental information.