TY - GEN AU - Leppien,Jann H. TI - Parallel curriculum units for social studies, grades 6-12 SN - 9781412965408 AV - LB 1584 PAR 2010 PY - 2010/// CY - United States of America PB - Corwin, Sage KW - Social sciences KW - Study and teaching (Elementary) KW - Study and teaching (Secondary) KW - Curriculum planning KW - Curriculum evaluation N1 - Includes bibliographical references and index; Includes bibliographical references and index ER -