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...

Did you know there are 20 volcanoes erupting at any given time? Pupils look at various igneous rocks, read local geologic maps, and determine if their area has a history of volcanic activity. A reading passage and analysis questions...

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

If you need a technical summary of igneous rock classification, then this resource is worth checking out. It has several different diagrams to help you visualize the classification process.

Learn about the different types of igneous rocks and how they are classified.

This resource contains detailed summaries of eight different igneous minerals. It also has enlarged pictures of the minerals as they appear embedded in igneous rock.

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how intrusive and extrusive igneous rocks form. Includes a few questions to check for understanding.

Review your understanding of the big ideas under the topic of igneous rocks.

Learn the basics of igneous rock formation.

Click for different identification keys for igneous rocks to help you classify them correctly. Includes various color/texture keys as well as classification charts. (NOTE: At the time of writing this, the PDF links were configured...

This site explores the classification of igneous rocks. Content addresses classification based on color and texture, mineral composition, and chemical composition.

Explains the difference between intrusive and extrusive igneous rocks and provides pictures and descriptions of common igneous rock types in each category.

A quick review of the basic concepts in igneous rock identification.

This lesson will present how to identify and classify igneous rocks. It is 2 of 3 in the series titled "Geology: Igneous Rocks."

Ask GeoMan lists Olivine, Pyroxene, Amphibole, Feldspar, Mica and Quartz, as five common rock forming minerals. Characteristics of each are also given.

What are rocks made of? Where do rocks come from? What is an igneous rock? These are just some of the questions answered by the scientists of the U.S. Geologic Survey.

Learn about various rock types and the rock cycle.

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

Explains what granite it, and has an alphabetical listing of different types of granite, with pictures and details.

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.

Click on the shelves in this virtual exhibition to learn about the many rocks and minerals that we use in our everyday lives.

Describes the characteristics of granite, how it is formed, its chemical composition, where it is found, how it is used, and some facts about granite.