The teaching firmCenter for Workforce Development (Education Development Center) · First published 1998Open the Tome
PROBLEM CARDS FOR GEO BLOCKS. Elementary Science StudyEducation Development Center. · First published 1977Open the Tome
Final report to USAID on African Mathematics Program, contract no. USAID afr-711, June 26, 1970, to May 31, 1975Education Development Center. · First published 1975Open the Tome
Teacher's guide for balloons and gasesEducation Development Center · First published 1971Open the Tome
