What are rocks?
Backgrounders
Learn about the types of rocks, the rock cycle, and weathering and erosion.
The World of Ocean Currents
Backgrounders
Learn about oceans and ocean currents and how they are being impacted by climate change.
Introduction to Rivers & Streams
Backgrounders
Learn about the physical geography, chemistry and ecology of rivers and streams.
All About Minerals
Backgrounders
Learn about the characteristics and uses of minerals.
What are the best materials to use for cleaning water?
Hands-on Activities
Water is a precious natural resource. What happens if it gets polluted? Learn how water can be cleaned with this hands-on activity?