This Instructional Activity is a part of the Lesson 1, Unit 9, Grade 8. In this activity, students think about different factors that influence outside temperature. Some are geographical (latitude, desert or sea climate, elevation), others are time of year, cloud cover, time of day, etc. This is a chance to make connections with some science concepts. It is not important that students come up with an exhaustive list. They should just get the idea that there are many factors so that they are open to the idea that we'll have to make some choices for our model and clearly define any variables we want to consider.