Star, JonRittle-Johnson, Bethany2011-05-152009Star, Jon R., and Bethany Rittle-Johnson. 2009. Making algebra work: Instructional strategies that deepen student understanding, within and between representations. ERS Spectrum, 27, no 2: 11-18.0740-7874http://nrs.harvard.edu/urn-3:HUL.InstRepos:4889486en-USMaking algebra work: Instructional strategies that deepen student understanding, within and between representationsJournal Article2011-05-15