TY - BOOK AU - BIGGS,Edith Ethel AU - MacLean,James R. TI - Freedom to learn: An active learning approach to mathematics SN - 0201005727 U1 - 510 PY - 1969/// CY - Don Mills, Ont., Reading, Mass., PB - Addison-Wesley (Canada) Ltd KW - Mathematics KW - Active learning N1 - Includes index N2 - For student teachers and teachers ER -