Teaching statistics by using simulations on the Internet

Simple probabilistic simulations, such as flipping a coin or rolling a dice, are used for illustration of statistical concepts and stochastic properties of modeled processes. With availability of personal computers in past decade, computer supported statistical simulations were introduced to statistics teaching. Such simulations - usually combined with graphic presentation of results and simulation itself - can be used for more obvious demonstration of statistical phenomena. With the advent of the Internet, new dimensions were introduced to teaching. The simulation software is easily available for those that are connected to the Internet, regardless of physical distance. Internet also brought cross-platform compatibility of teaching material, which was sometimes limited to one or another type of operating system. But there are some cultural and language barriers, usually combined with low availability of computers and Internet in some countries.