A Decade of Middle School Mathematics Curriculum Implementation Research in Mathematics Education Editat de Cynthia W. Langrall et al. 8 dec 2008 Paperback Preț: 402.37 lei 6-8 săpt.
Teachers Engaged in Research Editat de Cynthia W. Langrall 20 mar 2006 Paperback Preț: 398.25 lei 6-8 săpt.