KEYWORDS statistics, interactive, demonstration, computation, visualization END KEYWORDS ABSTRACT The UCLA Statistics Online Computational Resources (SOCR), http://socr.stat.ucla.edu, contains a number of interactive aids that help K-12, undergraduate and graduate students understand the notions of randomness, stochasticity, chance, order and organization. Through interactive Java-based web GUIs, demonstrations and experiments students and researchers learn about variation, modeling, visualization and data interpretation. END ABSTRACT