Reports on a study designed to focus on staff development delivery variables in the context of science teacher workshops. Data suggest that 8 to 16 hours is a minimum amount of time for staff development if teachers are to implement new strategies into their science classrooms. (TW)

Six biology teachers and 90 students participated in this study. Results indicate that teachers can be trained to use a systematic questioning technique, trained teachers can employ the technique in classroom settings, and students taught by the technique achieve higher and retain knowledge longer than those in control groups. (JN)