TinkerPlots 2.0 Released
TinkerPlots 2.0 was released in April, 2011. TinkerPlots features the Sampler Engine where students can design and run probability simulations.
The choices of sampler include a mixer, a spinner, stacks, bars, a curve and a counter devices. This allows students to set up their probability models in many different ways. Other features include "collect measures" that enable students to collect data regarding how often a particular outcome occurs when you repeat the experiment.
For more information see What's New in TinkerPlots 2