@article{452658,
      author = {Tan, Edna. and Calabrese Barton, Angela. and Varley  Gutiérrez, Maura. and Turner, Erin E.},
      url = {http://library.usi.edu/record/452658},
      title = {Empowering science and mathematics education in urban  schools [electronic resource] /},
      publisher = {The University of Chicago Press,},
      recid = {452658},
      pages = {1 online resource (208 pages) :},
      address = {Chicago ;},
      year = {2012},
}