A fun way to learn the 3 rock types, how they're formed and how they fit into the overall rock cycle. ... More information on igneous rocks. Igneous rocks are the "new kids" in the rock cycle.

The three types of rocks above can each form one another by melting or erosion and subsequent lithification. This process helps to bring nutrients from deep in Earth's mantle to the surface.

Zoom in. To teach kids about the three different kinds of rocks—igneous, sedimentary, and metamorphic—U.S. Forest Service geologist Kevin L. Johnson suggests looking closer at the finds with a ...

The three different types of rocks are made in different ways, which means that they all have different properties. Some might be harder or softer, and some might let water in more than others.