A models and modelling approach was adopted to investigate the educational potential of a science museum exhibition. It focused on patterns of relationship between the teaching models proposed by designers and students models in regard to four exhibits concerning astronomical cycles. Student's models were elicited by interviewing 21 pupils…

Describes instructional differences among English Immersion Strategy, early-exit, and late-exit transitional bilingual education programs. The three differ radically in the use of English and the primary language for instruction; these language-use patterns are consistent with each instructional model. Little or no differences were noted in…