TY - BOOK AU - Berry,John S. AU - Graham,Edward AU - Watkins,Antony J.P. TI - Learning mathematics through DERIVE T2 - Ellis Horwood series in mathematics and its applications SN - 0130375322 PY - 1993/// CY - New York PB - Ellis Horwood KW - Mathematics KW - Computer-assisted instruction KW - Study and teaching ER -