Science4Fun
Science4 Fun: Rocks
What are rocks? Learn about the different types of rocks and how they are formed.
BBC
Bbc Schools: Ks2 Bitesize: Science: Rocks and Soils
Easy-to-understand review of key concepts about rocks and soils, with diagrams, activities, and quiz questions.
CK-12 Foundation
Ck 12: Earth Science: Rocks Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about rocks and their properties. Includes a few questions to check for understanding.
Quia
Quia: Dig Into Geology
Site provides games and activities that will allow students to have fun, and learn more about rocks and minerals at the same time.