Examples of metamorphic rock are marble and slate.
Metamorphic rock is formed by the action of heat and pressure on sedimentary (which is limestone, sandstone or shale) or igneous rocks (which is granite, basalt or pumice) over long periods of time. It is the transformation of a pre-existing rock into a different type of rock. For example, limestone can turn into marble and shale can form into slate.
Use this image of a metamorphic rocker to see him make marble and slate. This will remind you that examples of metamorphic rock are marbles and slate.
Limestone forms into marble
Shale forms into slate