AU - Lombard, Ronald OP - pp. 9-42 T1 - A new suit for social studies : working with pre-service teachers and unit building using the understanding by design model as a guide [Article] UL - http://search.shamaa.org/PDF/Articles/YEJssust/JssustNo28Y2009/jssust_2009-n28_009-042_eng.pdf Full text (PDF) 1 http://search.shamaa.org/fulltext.gif