What are the three basic types of rocks, and how do they differ in terms of composition and geologic origin? Objective Students will be able to identify the three basic types of rocks (Igneous, Sedimentary, Metamorphic) and basic characteristics of each. Background Teacher will need to know the three main types of rocks and how they are formed. Teacher will need to know how to play the game “Rockity Rock Rock Rock” Teacher will need to be able to define geology (study of rocks and how they are formed) Preparation Variety of samples of all three types of rocks Experience playing and teaching th Duration: 60 Minutes.