I recently presented an after school lesson to a group of 6th grade science students on the rock cycle entitled "You've heard of rock musicians but have you heard of rock magicians?". During this study we discovered the three stages of the rock cycle and what happens to minerals during each stage to form igneous, sedimentary and metamorphic rocks.
After mastery of the rock cycle, I donned my "rock star attire" (hat, glowing beads and magic wand) to become the "Rock Magician". My "assistants" came up with a magic word we used to give each ordinary rock its special properties and with a wave of the magic wand, transformed ordinary rocks into amazing science. I was able to demonstrate igneous rock that floats like a boat (pumice), sedimentary rock that fizzes like soda pop (calcite), or turns into rubber (ozocderite), and metamorphic rock that glows in the dark (scapolite and sodalite).
Ultimately, they were able to deduce when a rock formed during the rock cycle by recalling the process involved during each phase of the cycle, and the properties exhibited by the rock. It was a great learning experience!