Explains how rocks are classified into three basic groups.

The Franklin Institute describes the way sedimentary rock is formed, with links to descriptions of several types of sedimentary rocks.

Consider the processes the rocks on the surface of the earth have gone through.

Site provides games and activities that will allow students to have fun, and learn more about rocks and minerals at the same time.

Learn about all the different levels of ecosystems, from the living things under a rock, up to a rainforest biome. Explains the levels of organization within an ecosystem, the different types of biomes, food chains and trophic levels,...

Rockhopper penguins live in steep, rocky places. The only way they can get around on land is to hop from rock to rock. Rockhoppers grow about 46 cm tall - almost as high as an adult's knee. They are the smallest of the crested penguins....