Developing and Using Models - NGSS Science and Engineering Practices A K-12 progression of the NGSS Science and Engineering Practice of Developing and Using Models. Performance Expectations that make use of this Science and Engineering Practice - https://ngss.nsta.org/Practices.aspx?id=2
Emergence video A portion of a PBS NOVA video discussing the concept of emergence (or complex adaptive systems) where patterns emerge in nature where agents follow simple rules.