DECIDE is a teacher-friendly, integrated approach designed to stimulate learning by allowing students to make decisions about situations they face in their lives while using scientific weather principles. This learning unit integrates weather science, decision theory, mathematics, statistics, geography, and reading in a context of decision problems relevant to the lives of middle school students. In this article, the authors present five comprehensive learning modules: (1) developing a decision-making mode; (2) probable cause; (3) decision-making using rainfall forecasts--foursquare courts; (4) weatherperson's backpack--key science knowledge; and (5) probabalistic decision making and weather assessment. (Contains 2 figures and 2 online resources.)