Building models has until recently been challenging for new-comers to system dynamics, but we now have both procedures and tools that make this far easier. It is now easier, faster and more reliable to build quantified working simulation models of time-based challenges and plans than it is to do a less-useful model using spreadsheet tools. This workshop will demonstrate the ‘Agile SD’ process [see], using the super-easy and accessible browser software, Sysdea. This requires no installation and allows anyone to run any model – see for a demonstration. Workshop Leader: Kim Warren [2013 President of the International System Dynamics Society, and 2005 winner of the Jay W Forrester Award]. Workshop slides: Workshop slides from a previous event: