What research has to say about vocabulary instruction - Farstrup, Alan E.; Cervetti, Gina N.; Farstrup, Alan E.; Bravo, Marco A.; Manzo, Anthony; Harmon, Janis M.; Samuels, S. Jay; Flinspach, Susan Leigh; Lubliner, Shira; Hedrick, Wanda B.; Blachowicz, Camile L. Z.; Scott, Judith A.; et al. (IRA, 2008)