Presents photographs of examples of clastic, chemical, and organic sedimentary rocks, with short descriptions underneath each rock image. Each rock name is also linked to its own dedicated page with a great deal of additional information...

[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.

[Free Registration/Login may be required to access all resource tools.] Explains that sedimentary rocks are classified by how they formed and by grain size.

[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.

Explains how rocks are classified into three basic groups.

Learn about the types of rocks where fossils can form.

Fourth graders identify rock types by observing key characteristics.

Sedimentary rock forms in layers that are deposited one after the other over long periods of time. Oftentimes, sedimentary rock contains fossils and other debris that are deposited within the layers. Use this experiment to investigate...

Students act out a type of rock, igneous, sedimentary, or metamorphic, for others to guess.

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

Did you know the rock cycle is a continuous cycle that takes hundreds of millions of years? This webpage explains how sedimentary, metamorphic, and igneous rocks are formed. It also gives examples of each type of rock. Also includes a...

Classify rocks and minerals according to their characteristics.