dimensions of variation we have laid out as our current research agenda. We are considering as our refined research agenda for the future to add 2 new dimensions of variation and explore the way that groups of different sizes with participants chosen with matched or unmatched problem- solving styles and with relevant or no subject expertise work together using this new type of distributed computer supported collaborative environment.
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We gratefully acknowledge the technical support of David Perry during the current round of experiments with Kansas at the Institute of Educational Technology and thank Sun Microsystems Laboratories for access to the Kansas software.