Australian Museum
Australian Museum: Igneous Rock Types
Learn about the different types of igneous rocks and how they are classified.
CK-12 Foundation
Ck 12: Earth Science: Igneous Rock Classification
[Free Registration/Login may be required to access all resource tools.] How to classify igneous rocks.
James Madison University
James Madison University: Keys to Igneous Rock Classification
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...
Sophia Learning
Sophia: Geology: Igneous Rocks: Lesson 3
This lesson will present how to identify and classify igneous rocks. It is 3 of 3 in the series titled "Geology: Igneous Rocks."
Sophia Learning
Sophia: Geology: Igneous Rocks: Lesson 2
This lesson will present how to identify and classify igneous rocks. It is 2 of 3 in the series titled "Geology: Igneous Rocks."
Read Works
Read Works: Earth Rocks
[Free Registration/Login Required] Students read about three different types of rocks: sedimentary, igneous, and metamorphic. A question sheet is available to help students build skills in classifying and categorizing.
Utah Education Network
Uen: Classifying Rocks and Minerals
Fourth graders identify rock types by observing key characteristics.
New York Times
New York Times: Crossword Puzzle: Rocks and Minerals
Here is an interactive and printable crossword puzzle developed by the New York Times Learning Network. The theme of this puzzle is Rocks and Minerals.
TeachEngineering
Teach Engineering: Rocks, Rocks, Rocks
Students test rocks to identify their physical properties (such as luster, hardness, color, etc.) and classify them as igneous, metamorphic or sedimentary. They complete a worksheet table to record all of the rock properties, and then...
Sophia Learning
Sophia: Geology: Rock Classification Overview
Understand how to classify rocks and minerals with this concise tutorial.
Mocomi & Anibrain Digital Technologies
Mocomi: Types of Rocks
Explains how rocks are classified into three basic groups.
Utah Education Network
Uen: Mineral Magic
Classify rocks and minerals according to their characteristics.