You don't have to travel far to learn about rocks, just step outside, pick up a stone, and begin investigating. After taking a class walk around the school grounds collecting rocks, young scientists practice their skills of observation...

Science rocks! Explore three types of rocks and the rock cycle with an igneous rocks experiment. Pupils discuss textures, composition, and learn how melts are formed from the Earth's crust. They weigh materials using a scientific scale...

Take young geologists on an exploration of the collection of rocks and minerals that we call Earth with an upper-elementary science lesson. Through a series of class discussion and hands-on investigations, students learn about the...

Breath new life into your class's study of dinosaurs with this extensive collection of materials. Offering everything from a printable T-rex mask, word searches, and connect-the-dots activities to informational handouts, hands-on...

The cementing of minerals together forms a sedimentary rock called sandstone. One form of sandstone is rock asphalt. Learn more about it here.

[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about how sedimentary rocks are classified. Includes a few questions to check for understanding.

Article explaining what limestone is, how it is formed, where it occurs, the different types, and how it has been used throughout history. (Published: August 8, 2010)

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how the three types of rocks form and convert from one to another. Includes a few questions to check for understanding.

Learn about the differences and similarities between the three different types of rocks on this page.

Covers the three main types of rocks, different weathering processes, erosion, and the rock cycle.

Essential guide to geology of the National Parks focuses on minerals and the different types of rocks. Includes a visual glossary.

Explains what sedimentary rocks are, the three main types, and how they are formed.

This resource explains the depositional processes that occur in sedimentary rock formation to produce stratification, cross-bedding, graded bedding, rippled effects, and solidified mud cracks. Includes photographs of each type.

Describes the three different types of rocks and provides a diagram showing where they fit into the rock cycle.

What are rocks? Learn about the different types of rocks and how they are formed.