SIMMONS, Malcom <br/><br/>
Working with a round turtle : the development of angle-rotation concepts under restricted feedback conditions 

 - Nueva York, EUA 
 - 23-33 
 - 1997 Vol. 28, no. 1, jan. 
 = COMPUTERS AND EDUCATION : AN INTERNATIONAL JOURNAL 
<br/><br/><label>Encabezamiento--Término de Indización: </label>COMPUTADORA FEEDBACK SOLUCION DE PROBLEMAS