@article{314045,
      author = {Friel, Susan N. and Rachlin, Sid. and Doyle, Dot.},
      url = {http://library.usi.edu/record/314045},
      title = {Navigating through algebra in grades 6-8 /},
      publisher = {National Council of Teachers of Mathematics,},
      recid = {314045},
      pages = {vi, 90 p. :},
      address = {Reston, Va. :},
      year = {2001},
}