Helping students understand the rock cycle always seemed challenging to me, until I hit upon "Rock Recipes." In this activity, students fill out "rock recipe cards" to help them identify how each kind of rock is made (igneous, sedimentary and metamorphic rocks). Then they use the recipes they have assembled to help them identify 5 mystery rocks selected by the teacher. This lesson includes a lesson plan, a student "Rock Recipes" graphic organizer sheet and three colorful IGNEOUS ROCK, SEDIMENTARY ROCK and METAMORPHIC ROCK information cards (for building recipes). It generally takes 2 class periods (with 6th graders) to complete this activity. My students really enjoyed trying to identify the "mystery rocks" -- the culmination of the activity. One year they insisted on having a second go at the identification challenge, so I had to fish out another selection of rocks from my supply closet! NOTE: I usually had my students work in pairs to fill out their recipe cards -- and I encouraged them to compare them with their neighbors' recipe cards before beginning the identification challenge...Once they understood the "recipe" for how a rock was made, they did far better at identifying rock types (and understanding the rock cycle).