Beck, Charles R. <br/><br/>
Are you as clever as a spider 

 - 12-16 
 - 16, No. 2, 1992 
<br/><br/>Marzo 1993 
 = SCIENCE SCOPE :  A JOURNAL FOR MIDDLE-JUNIOR HIGH SCIENCE TEACHERS 
<br/><br/><label>Encabezamiento--Término de Indización: </label>ACTIVIDADES CIENTIFICAS BIOLOGIA CLASES INTERMEDIAS INSTRUCCION CIENTIFICA MATERIALES MANIPULABLES