Students must have uninterrupted periods of time to process information, to reflect on what has been said, observed, or done, and to consider what their personal responses will be. After at least three seconds of uninterrupted silence, a significant number of positive outcomes occur for students and teachers. Students are more effective in…

This digest provides an overview of several meta-analysis studies which focused on various aspects of science instruction. These studies examined: productive factors in science learning for grades 6 through 12; quality and quantity of instruction; effects of various teaching strategies on science achievement; instructional systems in science…