In lesson 2, the students will learn and define changes. They will use examples from their lives to help them understand the idea of change. In lesson 3, the students will learn about solids, liquids, gases, mixtures and evaporation. They will find examples in magazines. These two lessons are designed to help build some background knowledge for the students to help them have a better understanding of what will occur in the experiments. By understanding the terms, changes, liquid, solid, and gas, the students will be able to explain the transformations they observe using more descriptive language.