This study investigates whether adequate yearly progress (AYP) status, locale, and sector--common variables used to judge the quality of schools--accurately signal true differences in instructional practices in high school mathematics and science. Using data from the High School Longitudinal Study (HSLS), we find the school-to-school variation in…

This study sought to ascertain the effect on student behavior of two approaches to visual information transmission. These approaches involved varying the sequence of messages transmitted through the visual communications channel and varying the redundancy of messages presented through this channel. The investigation was conducted as a four-group…

There are so many methods and approaches to teaching that it is sometimes difficult to choose the approach best suited to the needs of the students. This study sought to ascertain the relative effectiveness and efficiency of selected approaches to the demonstration of complex manipulative sequences, and to test the theory that students of high…

To justify the use of a particular teaching method it should be followed up with a measurement of student achievement. Thus, the primary objective of this study was to determine whether the project method of instruction is accomplishing its task of training young men and women to enter the world of work without the benefit of first hand experience…

Vacuum forming of thermoplastic was the manipulation tested, by various demonstration methods. (GB)

A teaching aid appropriate for a beginning course on experimental design is presented. The aid is a numerical example which illustrates some of the theoretical interrelations among three competing design analysis strategies for estimating treatment effects in random assignment designs. The analysis strategies considered are analysis of variance…

This study represents a segment of an evaluation of the effects of two diametrically-opposed instructional strategies on inner-city kindergarten children who had varying preschool experiences. The child- and parent-oriented "enrichment" approach was used in one school while the teacher- and goal-oriented "direct instructional"…

Rectifies the unsatisfactory textbook treatment of the finite-sample proprieties of estimators of regression models with a lagged dependent variable and autocorrelated disturbances. Maintains that the bias of the ordinary least squares estimator is determined by the dynamic and correlation effects. (MJP)

This research report recounts the procedures, results, and recommendations of a research project in which more than 200 tenth-grade students in Florida were tested (1) to determine whether aptitude treatment interaction (ATI) effects on syntactic maturity and on knowledge of structural relationships occur after several months of instruction; (2)…