Dillenbourg, P.Tchounikine, P.2007-10-152007-10-152007-10-15200710.1111/j.1365-2729.2007.00191.xhttps://infoscience.epfl.ch/handle/20.500.14299/12885Flexibility in macro‐scripts for computer‐supported collaborative learningtext::journal::journal article::research article