LIST OF TABLES TABLE I Class Means from Summated Ratings on Preand Posttest of Pupil Questionnaire 46 TABLE II F and T Ratios of Five Design Subgroups on Total Even Score of Observation Instrument 49 TABLE III F and T Ratios of Five Design Subgroups on Nature of Situation Score of Observation Instrument 51 TABLE IV F and T Ratios of Five Design Subgroups on Nature of the Problem Score of Observation Instrument 52 TABLE V F and T Ratios of Five Design Subgroups on Use of Subject Matter Score of Observation Instrument 54 TABLE VI F and T Ratios of Five Design Subgroups on Differentiation Score of Observation Instrument 55 TABLE VII Item Means on Pre- and Posttest of Pupil Questionnaire 57 TABLE VIII F and T Ratios of Overall Observation 62 vi