Ken Kahn has built a layer on top of BehaviourComposer that automates things so models and games can be built in 2 or 3 minutes. Hundreds of kids, parents, and teachers got to use it when it was exhibited at the Royal Society's Summer Science Exhibition in London. A lovely way to get a quick taste of modelling, you can build your own epidemic game at: modelling4all.nsms.ox.ac.uk/Resources/Composer/en/sse.html
Thanks lookang. I think you're absolutely right. One of our current lines of research is on understanding how schools can be helped towards a better understanding of the value of taking (pedagogical) risks.
We hope to have a podcast on that soon.