"Rocks" is a prototype kit of rock specimens, demonstration materials and activities for 5th and 6th grade classes to use over a two-week period. It is designed to allow students to discover that rocks were not always the same as they are today, that rocks contain clues to the changes they have undergone, what life on earth was like thousands of years ago, and forces that have been at work in nature. The box is divided into 5 phases; each phase designed to take about an hour of class time to complete. The teacher's guide section for each phase lists the rock specimens under consideration in that phase, outlines procedure for the activities, and points out the kinds of discoveries the children should be making. It also includes questions that the children should be able to discuss as a result of their experiments. Suggestions are offered for activities to follow up after the box has gone. Supplements include a bibliography, an inventory of the box, and a short descriptive note about the MATCH Box Project. (JY)