Thanks very much to the folks at Sage and at UTMOST for inviting us to participate in the Sage Edu Days 5 in Seattle, WA June 19 - 21. Jason Aubrey, Mike Gage and John Travis from the WeBWorK team participated. This is the third year that we have collaborated with Sage to augment the interaction between the two software applications.
As a result we have a new macro file "sage.pl" which simplifies the creation of sagelets -- plugin interacts that augment the power of WeBWorK questions. In addition Jason Aubrey created AskSage(), a new subroutine which allows WeBWorK to query an instance of sage to have an expression evaluated. These provide two different mechanisms for providing high level CAS support to WeBWorK questions by remotely accessing a sage cell server. The sage cell server has been under development by Jason Grout and the rest of the Sage team over the last three to four years.
The new sage interaction features are available in WeBWorK release/2.8 which is now "on deck" in the webwork github site: https://github.com/openwebwork/. Release/2.8 is undergoing final testing and bug squashing before being merged into the "master" branch. To try it out you will want to use the branch release/2.8 of both webwork2 and pg. These are available by simply executing "git fetch" on an up-to-date installation of WeBWorK. (See Github and release/2.7 for details.) While you are at it you should download the new changes to webwork-open-problem-library and run OPL-update to update the library database so as to incorporate the improvements made at the WeBWorK OPL workshop in Charlottesville, VA earlier this month. Preliminary release notes are available at http://webwork.maa.org/wiki/Release_notes_for_WeBWorK_2.8
More refinements and many more examples demonstrating the new sage interaction features are expected from the upcoming work at WeBWorK::Vancouver June 27-30 and the PREP13 model course workshop in Washington, DC, July 10-13.
Release/2.7 was incorporated into the "master" branch on June 15, 2013. The separate 2.7 branch on the openwebwork site will soon be removed.