CCC7: Stability and Change

Paul Andersen explains how stability and change are regulated in systems through controls and feedback.  Controls are used to regulate matter and energy flowing into a system.  Feedback mechanisms within the system are used to regulate stability.  Negative feedback loops keep the values around a set point and positive feedback loops move them away.  Disequilibrium can result in death of living systems and destruction of physical systems.  A progression of instruction for K-12 students is also included.