The students have learned the origin of sedimentary,
igneous, and metamorphic rocks. However, this does not guarantee that
students can pick up any rock and name it. Rock identification is difficult;
it is important to impress upon students that they are just beginning to
learn the process.
If you understand how the Rock Cycle works you can
picture how the rocks are formed. Once children get the "picture in
their head," then the names of the rocks will convey a more complete
picture of how it was formed and why it has that name.