Text ( visual ) : unmediated The educator's handbook for understanding and closing achievement gaps / Joseph Murphy. -- : cloth. -- Thousand Oaks, Calif. : Corwin , c2010. -- vii, 293 p. : ill. ; 26 cm. -- Includes bibliographical references (p. 271-286) and index. -- ISBN 9781412964548 ; (BB05610520) ; https://ci.nii.ac.jp/ncid/BB05610520 Author Heading(s): Murphy, Joseph. -- Classification(s): LCC : LB1062.6 ; DC22 : 371.2/07. -- Subject Heading(s): LCSH : Academic achievement ; LCSH : Educational change