“Can we break rocks again today?” This statement is typical of the excitement students show for identifying rock types after they apply their rock identification knowledge to the geology in the school yard. Many school yards, although bulldozed during construction, still exhibit telling outcrops of the underlying bedrock. Armed with a few materials, you can discover what is just outside your door while modeling the joy of doing science. This activity fits into the curriculum after the rock cycle and igneous, sedimentary, and metamorphic rock identification labs.