Hadley, William S. <br/><br/>
Bridge to algebra:  cognitive tutor student text/ 
William S. Hadley and Mary  Lynn Raith. 
 - Pittsburgh, PA:  Carnegie Learning,  c2005. 
 - x, 521 pages:  illustrations;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1-932409-43-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.
<br/><br/><label>Dewey Class. No.: </label>DC 512 H11 2005