@article{319688,
      author = {Battista, Michael T.},
      url = {http://library.usi.edu/record/319688},
      title = {Shape makers : developing geometric reasoning in middle  school with the Geometer's sketchpad /},
      publisher = {Key Curriculum Press,},
      abstract = {Students learn about triangles and quadrilaterals as a way  to become better prepared for high school geometry.},
      recid = {319688},
      pages = {viii, 224 p. :},
      address = {Emeryville, CA :},
      year = {2003},
}