This is a great project for introducing iPads to a science class. I used it in my 9th grade Earth Science class, allowing us to review some middle school science concepts before getting into deeper topics. The lesson covers properties of matter, classification, qualitative and quantitative observations, and how to work in collaborative small groups. NOTE: even though the data the students are collecting are clouds, this is not a lesson on Clouds. You can just as easily do the lesson with leaves,