As we conclude our study of weather, first grade students are investigating clouds. We have learned that clouds form when warm air and cold air meet. They are defined by they way they look as well as where they are found in the atmosphere with the three main groups being stratus, cumulus, and cirrus. Books such as The Cloud Book by Tomie dePaola and The Man Who Named the Coulds by Julie Hannah and Joan Holub have guided our classroom discussions.