Alison K Cohen
An instrumental variables approach to assess the effect of class size reduction on student screen time
Social science & medicine (1982)
science teachers must adapt curriculum materials preservice teachers must develop beginning proficiency authentic task teaching criteria use critique materials preparation adapting develop criteria given set criteria choose results indicate 20 participating preservice elementary teachers held sophisticated set criteria critiquing instructional materials example paid attention scientific inquiry instructional goals cases providing options could select part instructional approach taken class allowed preservice teachers engage substantive critique instructional materials along criteria prominent initial set even explicit support however preservice teachers engage substantive critique scientific content represented furthermore typically describe inquiry important incorporate promote student interest engage students genuine scientific activity concluded critique activities used science methods courses authentic scaffolded optimally effective critique along especially challenging dimensions needs systematic explicit perhaps consistent support 2006 wiley periodicals inc sci ed 90348375 2006