Developing thinking in geometry / 
edited by Sue Johnston-Wilder, John Mason. 
 - xii, 270 pages :  illustration ;  25 cm. +  1 CD-ROM (4 3/4 in.) 
<br/><br/>Includes bibliographical references (p. [258]-260) and index. 
<br/><br/>Invariance - Language and points of view -- Reasoning based on invariant properties -- Visualising and representing -- Invariance in measurement -- Measuring areas and volumes -- Geometrical reasoning -- Visualising -- Transformations and invariants -- Language and points of view -- Reasoning with transformation geometry -- Visualising transformations -- Themes and structure -- Powers, constructs and strategies -- Epilogue -- References -- Index -- CD-ROM: Interactive geometry files -- Audio files - imaginings -- Paper resources. 
<br/><br/><br/>System requirements: monitor, mouse, CD-ROM drive. 
<br/><br/><label>ISBN: </label>1412911680 1412911699 (pbk.) 
<br/><br/><label>LCCN: </label>2005924502 
<br/><br/><label>Nat. Bib. No.: </label>GBA538497  bnb 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry--Study and teaching.<br/>Symmetry (Mathematics)--Study and teaching.
<br/><br/><label>LC Class. No.: </label>QA461  / .D48 2005